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Published by capintec, 2018-02-19 20:13:15

CAPTUS 600 Manual

CAPTUS 600 Manual

CAPTUS® 600

THYROID UPTAKE SYSTEM

OWNER’S MANUAL

Capintec, Inc.
Sales and Marketing
and Customer Support

6 Arrow Road
Ramsey, NJ 07446
Phone (800) ASK-4CRC
Fax (201) 825-1336

Capintec, Inc.
Service Center
620 Alpha Drive
Pittsburgh, PA 15238
Phone (800) 227-6832
Fax (412) 963-0610
Copyright© 1995 Capintec, Inc.
CAPTUS® is a registered trademark of Capintec, Inc.

ALL RIGHTS RESERVED

Manual Stock No. 9250-0072

Rev. M – November 2007



CAPINTEC, INC. CAPTUS® 600

TABLE OF CONTENTS

PREFACE

SAFETY ................................................................................................................................1-1
SYMBOL DEFINITIONS ....................................................................................................1-1
WARNING AND CAUTION LABELS .................................................................................1-2
CAUTIONS AND NOTES ..................................................................................................1-5
GENERAL SAFETY TIPS..................................................................................................1-6

FUNCTIONAL & TECHNICAL DESCRIPTION ....................................................................2-1
GENERAL..........................................................................................................................2-1
TECHNICAL DESCRIPTION.............................................................................................2-1
Detector .........................................................................................................................2-2
Multichannel Analyzer....................................................................................................2-2
TECHNICAL SPECIFICATIONS .......................................................................................2-2
Thyroid Uptake Stand ....................................................................................................2-2
System Power Requirements ........................................................................................2-3
Environment Requirements ...........................................................................................2-3
Operational ................................................................................................................2-3
Storage ......................................................................................................................2-3
Isolation Transformer .....................................................................................................2-4
Printer ............................................................................................................................2-4
Readout Unit ..................................................................................................................2-4
Nuclear Data ..................................................................................................................2-4
Calibration Source Data.................................................................................................2-5
Multichannel Pulse Height Analyzer ..............................................................................2-5
Diagnostics and Test .....................................................................................................2-5
Utilities ...........................................................................................................................2-5
Display ...........................................................................................................................2-5
Two Separate Inputs......................................................................................................2-5
Probe Detector...............................................................................................................2-6
Well Detector – Optional ................................................................................................2-6
Regulatory Listings ........................................................................................................2-6
EMC...........................................................................................................................2-6
Electrical ....................................................................................................................2-6
ETL Listed .................................................................................................................2-6
FUNCTIONAL DESCRIPTION ..........................................................................................2-7
Thyroid Uptake...............................................................................................................2-7
Thyroid Uptake Nuclides................................................................................................2-7
Pre-Dose Measurement.................................................................................................2-7
Thyroid Uptake Protocols...............................................................................................2-7
One Capsule Method.................................................................................................2-8
Standard Capsule Method.........................................................................................2-8
Two Capsule Method.................................................................................................2-8
Multi-Capsules...........................................................................................................2-9
Wipe Tests .....................................................................................................................2-9

November 07 TABLE OF CONTENTS TOC-i

CAPINTEC, INC. CAPTUS® 600

Lab Tests – Urine......................................................................................................2-9
Lab Tests – Blood ...................................................................................................2-10
Staff Bioassay..............................................................................................................2-10

GENERAL OPERATING OVERVIEW..................................................................................3-1
TURN ON SYSTEM ..........................................................................................................3-1
LOG-ON PASSWORD ......................................................................................................3-1
SYSTEM FUNCTIONS......................................................................................................3-2
PROBE SCREEN ..............................................................................................................3-3
WELL SCREEN.................................................................................................................3-3
HOME Key ........................................................................................................................3-4
Changing from PROBE to WELL Functions ......................................................................3-4
Changing from WELL to PROBE Functions ......................................................................3-4
CONTRAST ....................................................................................................................... 3-4
SCREEN DIMMER ............................................................................................................3-4
FUNCTION Keys ...............................................................................................................3-5
PRINT Key ........................................................................................................................3-5
UTIL Key ...........................................................................................................................3-5
KEYBOARD ......................................................................................................................3-6
BSP Key ............................................................................................................................3-6
PROMPT ...........................................................................................................................3-6
ARROW Keys....................................................................................................................3-6
ALPHANUMERIC ENTRIES .............................................................................................3-7
Entries with Number and Letters ...................................................................................3-7
SPACE Key ...................................................................................................................3-7
Decimal Point.................................................................................................................3-7
BLANK ENTRIES ..............................................................................................................3-8
INVALID VALUES .............................................................................................................3-8
ENTERING DATE and TIME.............................................................................................3-8
SETUP PASSWORD ........................................................................................................3-8
YES or NO Answers ..........................................................................................................3-9
COUNTING METHODS ....................................................................................................3-9
MEASUREMENT ERRORS ............................................................................................3-10
HIGH VOLTAGE ADJUSTMENT ....................................................................................3-10
OFFSET VOLTAGE ADJUSTMENT ...............................................................................3-10
DISPLAY CONTRAST ADJUSTMENT ...........................................................................3-11
DATA ENTRY INPUT LIMITS .........................................................................................3-11
Thyroid Uptake Protocols ............................................................................................3-11
Thyroid Uptake Measurements....................................................................................3-11
Cs137 Standard...........................................................................................................3-11
Bioassay Protocol ........................................................................................................3-12
Additional Nuclide ........................................................................................................3-12
Blood Volume ..............................................................................................................3-12
RBC Survival Measurement ........................................................................................3-12
Patient Demographics .................................................................................................3-12
Wipe ............................................................................................................................3-12
Description ..............................................................................................................3-12
Background Counting..............................................................................................3-12
Generic Conversion Factors ...................................................................................3-12
Trigger Levels .........................................................................................................3-13

TOC-ii TABLE OF CONTENTS November 07

CAPINTEC, INC. CAPTUS® 600

Staff Data .....................................................................................................................3-13

SYSTEM SETUP...................................................................................................................4-1
INSTALLATION .................................................................................................................4-1
ENVIRONMENT REQUIREMENTS ..................................................................................4-1
Operational ....................................................................................................................4-1
Storage ..........................................................................................................................4-1
POWER REQUIREMENTS ...............................................................................................4-2
TURN ON PROCEDURE ..................................................................................................4-2
GENERAL OPERATIONAL SETUP ..................................................................................4-3
ACCEPTANCE TESTING..................................................................................................4-3
SETTING UP FOR THYROID UPTAKES OR WIPE TESTS ............................................4-4
SETTING UP FOR LAB TESTS (URINE & BLOOD).........................................................4-4
SETUP FOR STAFF BIOASSAY.......................................................................................4-4
SETUP FOR MULTICHANNEL ANALYZER .....................................................................4-4

SYSTEM INITIALIZATION....................................................................................................5-1
DATE & TIME SETUP .......................................................................................................5-1
Date Entry Format..........................................................................................................5-1
Changing the Time and Date Setting.............................................................................5-2
SETTING HOSPITAL OR FACILITY NAME......................................................................5-3
CURIES / BECQUEREL SETUP .......................................................................................5-4
Cs137 STANDARD SETUP...............................................................................................5-7
CHI-SQUARE TEST SETUP .............................................................................................5-9
CONVERSION FACTORS ..............................................................................................5-11
Entering Nuclide Name ................................................................................................5-13
Selecting Measure or Input CF ....................................................................................5-14
Input CF...................................................................................................................5-14
Measure CF.............................................................................................................5-15

ACCEPTANCE & QUALITY ASSURANCE TESTS.............................................................6-1
ACCEPTANCE TESTS......................................................................................................6-1
QUALITY ASSURANCE TESTS .......................................................................................6-1
Daily Tests .....................................................................................................................6-1
Monthly Tests.................................................................................................................6-1
Quarterly Tests ..............................................................................................................6-2
CALIBRATION TEST.........................................................................................................6-2
CHI-SQUARE TEST ..........................................................................................................6-5
AUTO CALIBRATION TEST..............................................................................................6-5
MDA TEST.........................................................................................................................6-9
DIAGNOSTICS ................................................................................................................6-12
Diagnostics Printout .....................................................................................................6-13
System Configuration ..............................................................................................6-13
Nuclide Data ............................................................................................................6-13
Additional Nuclides ..................................................................................................6-14
User Keys ................................................................................................................6-14
Standard Source......................................................................................................6-14
PROM Values..........................................................................................................6-14
Memory Tests..........................................................................................................6-14

November 07 TABLE OF CONTENTS TOC-iii

CAPINTEC, INC. CAPTUS® 600

THYROID UPTAKE SETUP .................................................................................................7-1
COUNTING METHODS ....................................................................................................7-1
PROTOCOLS ....................................................................................................................7-4
Adding a Protocol ..........................................................................................................7-6
Editing a Protocol.........................................................................................................7-11
Deleting a Protocol ......................................................................................................7-11
Printing Protocol Information .......................................................................................7-11

THYROID UPTAKE GENERAL INSTRUCTIONS................................................................8-1
ACCESSING THYROID UPTAKE STUDIES ....................................................................8-1
ENTERING PATIENT DEMOGRAPHICS .........................................................................8-2
SELECTING PROTOCOL .................................................................................................8-3
SELECTING PATIENT ......................................................................................................8-4
PRINTING THYROID UPTAKE PATIENT SUMMARY .....................................................8-5
VIEWING PATIENT INFORMATION.................................................................................8-5
SELECTING PATIENT TO MEASURE .............................................................................8-6
MEASURING THE NECK AND THIGH.............................................................................8-7
PRE-DOSE MEASUREMENT...........................................................................................8-9
PRINTING RESULTS......................................................................................................8-11

THYROID UPTAKE: ONE CAPSULE METHOD .................................................................9-1
GENERAL PROCEDURE .................................................................................................9-1
PRE-DOSE MEASUREMENT...........................................................................................9-1
ENTERING CAPSULE DATA............................................................................................9-2
MEASURING THE CAPSULE(S) ......................................................................................9-3
ADMINISTERED DOSE ....................................................................................................9-6
Administering the Dose Later ........................................................................................9-6
Entering Administered Dose Data .................................................................................9-7
UPTAKE MEASUREMENT ...............................................................................................9-8
VIEWING RESULTS .........................................................................................................9-9

THYROID UPTAKE: TWO CAPSULE METHOD...............................................................10-1
GENERAL PROCEDURE ...............................................................................................10-1
PRE-DOSE MEASUREMENT.........................................................................................10-1
ENTERING ADMINISTERED DOSE...............................................................................10-1
MEASURING THE REFERENCE CAPSULE(S).............................................................10-3
UPTAKE MEASUREMENT .............................................................................................10-6
VIEWING RESULTS .......................................................................................................10-7

THYROID UPTAKE: STANDARD CAPSULE METHOD ...................................................11-1
GENERAL PROCEDURE ...............................................................................................11-1
ACCESSING TU STANDARD.........................................................................................11-1
ADDING A TU STANDARD.............................................................................................11-2
EDITING A TU STANDARD ............................................................................................11-3
DELETING A TU STANDARD.........................................................................................11-3
PRINTING TU STANDARD DATA ..................................................................................11-4
MEASURING TU STANDARD ........................................................................................11-4
SELECTING STANDARD FOR TU STUDY....................................................................11-6
PRE-DOSE MEASUREMENT.........................................................................................11-7
ENTERING ADMINISTERED DOSE...............................................................................11-7

TOC-iv TABLE OF CONTENTS November 07

CAPINTEC, INC. CAPTUS® 600

UPTAKE MEASUREMENT .............................................................................................11-9
VIEWING RESULTS........................................................................................................11-9

WIPE TEST SETUP ............................................................................................................12-1
INTRODUCTION .............................................................................................................12-1
WIPE DESCRIPTIONS....................................................................................................12-2
Entering Data for a Wipe Location ...............................................................................12-2
Adding a Location ........................................................................................................12-3
Editing or Deleting a Location ......................................................................................12-4
TRIGGER LEVEL/COUNT TIME.....................................................................................12-4
GENERIC CONVERSION FACTORS .............................................................................12-6
ADDITIONAL NUCLIDES ................................................................................................12-7
USER KEY ASSIGNMENT..............................................................................................12-9

WIPE TEST .........................................................................................................................13-1
INTRODUCTION .............................................................................................................13-1
MEASURING BACKGROUND ........................................................................................13-1
MEASURING A WIPE .....................................................................................................13-3
WIPE RESULTS ..............................................................................................................13-5
WIPE GRAPHICS SCREEN............................................................................................13-6
Scale/Cursor Mode ......................................................................................................13-7
Activity of a Nuclide......................................................................................................13-7
Activity for Generic Conversion Factor ........................................................................13-7
WIPE REPORT................................................................................................................13-7
INTERPRETING WIPE RESULTS ..................................................................................13-9

LAB TESTS SETUP ...........................................................................................................14-1
INTRODUCTION .............................................................................................................14-1
GENERAL PROCEDURE................................................................................................14-1
STARTING LAB TESTS ..................................................................................................14-2
ENTERING PATIENT DEMOGRAPHICS .......................................................................14-3
MEASUREMENT PROCEDURE.....................................................................................14-4

LAB TESTS: URINE TEST.................................................................................................15-1
INTRODUCTION .............................................................................................................15-1
PERFORMING SCHILLING TEST MEASUREMENTS...................................................15-1

LAB TESTS: BLOOD TESTS.............................................................................................16-1
INTRODUCTION .............................................................................................................16-1
BLOOD VOLUME (Cr51).................................................................................................16-1
BLOOD VOLUME (I125)..................................................................................................16-6
RED BLOOD CELL SURVIVAL.....................................................................................16-10

STAFF BIOASSAY .............................................................................................................17-1
STAFF BIOASSAY DATA................................................................................................17-1
Adding Staff Member ...................................................................................................17-2
Editing Staff Member Data...........................................................................................17-3
Deleting a Staff Member ..............................................................................................17-4
ENTERING THE BIOASSAY PROTOCOL......................................................................17-4
X-RAY/GAMMA RATIO ...................................................................................................17-5

November 07 TABLE OF CONTENTS TOC-v

CAPINTEC, INC. CAPTUS® 600

MAKING BIOASSAY MEASUREMENTS........................................................................17-5
PRINTING STAFF BIOASSAY RESULTS ......................................................................17-7

MULTICHANNEL ANALYZER SETUP ..............................................................................18-1
INTRODUCTION .............................................................................................................18-1
MCA SETUPS .................................................................................................................18-1
Adding a Setup ............................................................................................................18-3
Editing a Setup ............................................................................................................18-6
Deleting a Setup ..........................................................................................................18-6
Printing All the Setups .................................................................................................18-6

MULTICHANNEL ANALYZER OPERATION ....................................................................19-1
MCA MEASUREMENTS .................................................................................................19-1
Calibration.................................................................................................................... 19-2
MEASURING BACKGROUND ........................................................................................19-2
MEASURING A SOURCE ...............................................................................................19-4
Activity of a Nuclide .....................................................................................................19-8
Exiting MCA Measurement ..........................................................................................19-8

CLEANING AND MAINTENANCE .....................................................................................20-1
INTRODUCTION .............................................................................................................20-1
CLEANING INSTRUCTIONS ..........................................................................................20-1
PREVENTATIVE MAINTENANCE ..................................................................................20-2
Collimator Block Inspection .........................................................................................20-3
SERVICING ..................................................................................................................... 20-3
DISPOSAL ......................................................................................................................20-4
FUSE SERVICING ..........................................................................................................20-5
Power Line Fuses ........................................................................................................20-5
Readout Unit Fuses .....................................................................................................20-6
Printer Fuse .................................................................................................................20-6
ACCESSORIES AND REPLACEMENT PARTS .............................................................20-7
SHIPPING .......................................................................................................................20-7

INDEX

WARRANTY

DECLARATION OF CONFORMITY

TOC-vi TABLE OF CONTENTS November 07

CAPINTEC, INC. CAPTUS® 600

PREFACE

Thank you for purchasing the CAPINTEC line of Thyroid Uptake Measurement Systems.
Every effort has been made to insure that the information in this document is complete,
accurate, and up-to-date. CAPINTEC assumes no responsibility for the results of errors
beyond its control. Mention of products manufactured by other companies does not
necessarily constitute endorsement by CAPINTEC, Inc.

CAPTUS® 600 and CII are registered trademarks of CAPINTEC, Inc.
OKIDATA and MICROLINE are registered trademarks of Oki Electric Industry Company, Ltd.

DESCRIPTION

Your new CAPTUS® 600 is available in several configurations. Please take a moment to
review your system to determine exactly the configuration you have received. The basic
Thyroid Uptake System consists of the following:

• Thyroid Uptake Stand and NaI (sodium iodide) Detector with Collimator, which
includes an Isolation Transformer attached to stand.
Note: Two versions of detectors are available: Flat Face Probe or Drilled Probe.

• Readout Unit.
• Printer (Various options are available)
• Cable Set for connecting detector, printer, etc.
• Well Counter with drilled Well detector (Optional purchase).

YEAR 2000 COMPLIANCE

The CAPTUS® 600 measurement systems contain information technology that accurately
processes date and time data between the years 1999 and 2000. These products, when
used in combination with products purchased from other manufacturers, whose products
properly exchange date and time information, will accurately process the date and time. All
future products are committed to meeting the same Year 2000 Compliance.

MEDICAL EQUIPMENT SAFETY CLASSIFICATION

• CLASS I EQUIPMENT energized from an external power source.
• TYPE B EQUIPMENT with no applied parts to the patient.
• Ordinary EQUIPMENT without protection against the ingress of water.

November 07 PREFACE p-1

CAPINTEC, INC. CAPTUS® 600

• Suitable for CONTINUOUS OPERATION.
• NOT suitable for use in an OXYGEN or a FLAMMABLE ENVIRONMENT.

ELECTROMAGNETIC INTERFERENCE POTENTIAL

This equipment complies fully with interference immunity requirements of the standard EN
60601-1-2 “Medical electrical equipment: Part 1: General safety requirements; 2.
Supplementary standard: Electromagnetic compatibility”.

This equipment generates radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to nearby devices.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference, the user is encouraged to try to correct the
interference by one of the following measures:

• Increase the separation between the equipment and the affected device.

• Plug the unit into an outlet on a circuit different from that which the affected device is
connected.

If this fails to correct the problem, please contact Capintec’s Authorized Service Center.

INSTALLATION

Your system has been shipped from the factory pre-configured and fully tested. Installation
consists of placing the components on the stand and securing them in place. Detailed
installation and assembly instructions are provided in the CAPTUS® 600 Unpacking and
Assembly Instructions.

IMPORTANT SAFETY INFORMATION

The CAPTUS® 600 measurement system has been carefully designed to give you years of
safe and reliable performance. As with all electrical equipment, however, there are basic
precautions you must observe to avoid injuring yourself, the patient or damaging the
equipment.

• Follow the unpacking and assembly instructions document, and read this manual
carefully before using this equipment. Be sure to save all provided documents for
future reference.

• Understand all warning and caution labels as explained in CHAPTER 1: SAFETY
chapter before operating this equipment.

p-2 PREFACE November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 1

SAFETY

These warnings and instructions for use form an integral part of the CAPTUS® 600 and must
therefore be kept available for consultation at all times. Precise compliance with the warnings
and instructions is an essential condition for normal use, correct application and thus safety
of patients and user.

SYMBOL DEFINITIONS

Dangerous Voltage Present

Protective Earth Ground

Attention: consult owner’s manual for further information

Fuse

AC Voltage

“ON” (power)

“OFF” (power)

0413 CE Mark
Waste in Electrical and Electronic Equipment (WEEE) –
This symbol indicates that the waste of electrical and
electronic equipment must not be disposed as unsorted
municipal waste and must be collected separately.
Environmentally Friendly Use Period (EFUP) – 20 years
from the date of manufacture – Toxic or hazardous
substances or elements contained in the unit will not leak
or mutate under normal operating conditions resulting in
any environmental pollution, bodily injury or damage to
assets.

November 07 SAFETY 1-1

CAPINTEC, INC. CAPTUS® 600

WARNING AND CAUTION LABELS

Located in the center section on both sides of the spring-arm of the floor stand is a warning
label, (Figure 1-1), concerning the hazard of removing the collimator when the spring-arm is
in the wrong position. When the weight of the collimator is removed from the spring-arm, the
arm can forcefully spring upward and cause serious bodily injury to the operator. The spring-
arm must be fully extended in the upright position to prevent this hazardous condition.

Figure 1-1

Located in the front section on both sides of the spring-arm of the floor stand is a warning
label, (Figure 1-2), concerning the hazard of improperly installing the collimator onto the
spring-arm. If the collimator support pin is not fully inserted and latched into the receptacle
block of spring-arm, the collimator may detach from the spring-arm and fall onto the patient.
In addition, the arm can, again, forcefully swing upward and cause serious bodily injury to the
operator. The collimator is safely installed on the spring-arm when the red warning ring is
NOT visible between the collimator and the receptacle block. Refer to the UNPACKING AND
ASSEMBLY INSTRUCTIONS for illustrations.

Figure 1-2

Located on the top of the Isolation Transformer is a label, (Figure 1-3), providing the system
power requirements, the voltage and serial number of the system and the replacement fuse
values for both power line voltages.

Please reference CHAPTER 20: CLEANING AND MAINTENANCE for instructions on how to
change the fuses on the CAPTUS® 600 Isolation Transformer.

A fire hazard may exist if the wrong size of fuse is installed.

1-2 SAFETY November 07

CAPINTEC, INC. CAPTUS® 600

Figure 1-3

Located on the left side of the Isolation Transformer is a label (Figure 1-4), with two caution
statements pertaining to the main power cord of the Isolation Transformer. The statement,
READ INSTRUCTIONS CAREFULLY BEFORE CONNECTING TO OUTLET, directs the
user to the owner’s manual before connecting the power. The second statement alerts the
user to select an electrical power receptacle that is designated as HOSPITAL ONLY or
HOSPITAL GRADE, to insure reliable grounding is provided to the CAPTUS® system for
electrical safety requirements.

Figure 1-4

Located on the back panel of the CAPTUS® 600 Readout Unit is the following label (Figure 1-
5), stating the proper fuse ratings. A fire hazard may exist if the wrong size of fuse is
installed.

November 07 SAFETY 1-3

CAPINTEC, INC. CAPTUS® 600

Figure 1-5

Located on the connector guard on the back panel of the CAPTUS® 600 Readout Unit is a
label (Figure 1-6), with the caution statement pertaining to safety of the operator. This
statement, DO NOT REMOVE CONNECTOR GUARD, is necessary because of the
presence of high voltage on the connectors and on the inside of the Instrument.

Figure 1-6

This “Consult Accompanying Document” symbol (Figure 1-7) refers to the CHAPTER 3:
GENERAL OPERATION OVERVIEW, for instructions on how to use the Probe Offset, Well
Offset and Contrast adjustments on the CAPTUS® 600 Readout Unit.

Figure 1-7

This “Consult Accompanying Document” symbol (Figure 1-8) refers to the Chapter 3:
GENERAL OPERATION OVERVIEW chapter in this manual, for instructions on how to use
Probe and Well High Voltage adjustments on the CAPTUS® 600 Readout Unit.

Figure 1-8

1-4 SAFETY November 07

CAPINTEC, INC. CAPTUS® 600

CAUTIONS AND NOTES

CAUTION
Only qualified/trained personnel should operate or service this unit.

CAUTION
If the equipment is used in a manner not specified in this manual, the protection provided by
the equipment may be impaired.

CAUTION
High voltage is present inside the Detectors (up to 1000 Volts). Due to the presence of these
high voltages, opening the covers with the system plugged in may be hazardous. Refer all
servicing to qualified personnel.

CAUTION
No internal adjustments inside the Detector or Readout may be performed by the user within
the conditions of the warranty, except for changing the fuse. Due to the presence of high
voltages, opening the cover with the system plugged in may be hazardous. Refer all
servicing to qualified personnel.

CAUTION
Never use the Well Detector without the well liner in place. Liners are inexpensive and easy
to replace. A contaminated Detector is a very costly mistake. If unit becomes contaminated
remove liner and clean unit as stated in CHAPTER 20: CLEANING AND MAINTENANCE
before operating.

CAUTION
Care must be exercised when moving the system or when maintenance is performed. The
system must not be inclined more than a 15-degree angle or tip over may occur.

CAUTION
Verify that the Collimator is correctly installed as stated in the Unpacking and Assembly
Instructions. Failure to follow these instructions could result in injury or product malfunction.

CAUTION
This equipment generates radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful Electromagnetic Interference (EMI) to
nearby devices. However, there is no guarantee that interference will not occur in a particular
installation.

CAUTION
If any printer other than the model supplied by Capintec is used, the safety of the unit may be
compromised or Electromagnetic Interference (EMI) may be introduced into other devices
located in the same general area as the CAPTUS® 600 may become susceptible to EMI.

CAUTION
The unit contains lead. The unit should be disposed of in accordance with local and national
regulations.

November 07 SAFETY 1-5

CAPINTEC, INC. CAPTUS® 600

CAUTION
The unit contains a Lithium Battery. This should be disposed of in accordance with local and
national regulations.

CAUTION
The user should always verify the validity of any measurement or test result in order to
minimize measurement errors.

NOTE
It is recommended that periodic (every five years) re-calibration of the unit be performed by
Capintec’s Authorized Service Center (reference CHAPTER 20: CLEANING AND
MAINTENANCE) to guarantee that the instrument's high reliability is maintained.

GENERAL SAFETY TIPS

• Unplug the equipment before cleaning it. Use only a damp cloth; do not use solvents
or aerosol cleaners.

• To protect the equipment from overheating, make sure none of the openings (vents)
on the Readout Unit or the Printer are blocked. Do not use the equipment directly in
front of a radiator or heat register.

• The print head, in the printer, can get quite hot when it’s been printing for a length of
time. Do not touch the print head until it has had a chance to cool.

• Do not use the equipment near water, or spill liquids of any kind into the equipment.

• Be sure that your power source matches the rating listed on the Isolation
Transformer.

• The CAPTUS® 600 power cord has a grounded, 3-prong plug as a safety feature, and
it will only fit into a grounded outlet. Do not use an adapter to defeat the grounding.

• To avoid damaging the power cord, do not place anything on it or place it where it will
be walked on. If the cord becomes damaged, replace it immediately.

• Aside from the routine maintenance described in this manual, do not try to service
this equipment yourself. Do not make any adjustments other than those outlined in
this manual, as you may in-validate the calibration or cause damage requiring
extensive repair work. Refer servicing to qualified service personnel.

• Do not subject the Detectors to rough handling, or rapid temperature changes, as the
NaI Scintillation Crystal can be damaged. Do not use the equipment directly in front of
a radiator, heat register, or air conditioning duct.

1-6 SAFETY November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 2

FUNCTIONAL & TECHNICAL
DESCRIPTION

GENERAL

The CAPTUS® 600 Thyroid Uptake / Well System is intended to be used by trained Nuclear
Medicine Technologists for performing Thyroid Uptake, Thyroid Bioassay, Wipe Test, Blood
Volume Test, Shillings Test and RBC Survival Test.

The CAPTUS® 600 also performs Pulse Height Analysis, isotope identification, radioisotope
decay corrections, efficiency calculations, and maintains appropriate storage and retrieval
files for reference data, and patient demographic data.

Your new CAPTUS® 600 is available in several configurations. Please take a moment to
review your system to determine exactly the configuration you have received. The basic
thyroid uptake system consists of the following:

• Thyroid Uptake Stand and NaI (sodium iodide) Detector with Collimator, which
includes an isolation transformer, attached to stand.

Note: Two types of probe are available: Flat Face Probe or Drilled Probe.

• Readout Unit.

• Printer.

• Cable Set for connecting detector, printer, etc.

• Well Counter with drilled well detector (Optional purchase).

TECHNICAL DESCRIPTION

The CAPTUS® 600 contains a 256 channel microcontroller based pulse height analyzer.
Lower level discriminators are selectable and the firmware permits predefined or selectable
ROI’s (maximum width of 256 channels). The LCD displays alphanumeric data, live spectra,
and graphics. Corrections are automatically calculated for dead time loss. Real time and live
time may be displayed. Coarse high voltage adjustments are made from analog controls at
the back of the console. Fine high voltage adjustments and all other parameters are
controlled through the keypad.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-1

CAPINTEC, INC. CAPTUS® 600

Detector

Your CAPTUS® 600 system is equipped with a Probe (and possibly a Well), which consists of
a NaI (Tl) (thallium-activated sodium iodide) crystal and photomultiplier tube detector
assemblies. When a gamma or x-ray from a radioactive source reaches the NaI crystal, it
collides with the electrons in the crystal matrix and transfers energy. The excited electron
releases this energy as visible light in direct proportion to its absorbed energy. For this
reason, NaI detectors are classified as scintillation detectors. These sequential emissions of
light for each incident ray generated from the collisions appear to the measuring system as a
single light pulse. The intensity of the pulse is directly proportional to the energy of the
incident gamma or x-ray.

The light is eventually directed toward the photomultiplier tube. The photomultiplier tube,
which is optically connected to the sodium iodide crystal, converts the visible light pulses into
electrical energy and amplifies the signal through a series of dynodes. The resultant
electrical signal is directly proportional to the intensity of the incident light pulse. Therefore,
the pulse height generated by the system is directly proportional to the energy of the incident
gamma or x-ray detected by the system.

Multichannel Analyzer

A multichannel analyzer (MCA) records the number and height of the electrical pulses
generated by the system, divides the pulses into groups based upon pulse height, and
provides a visible picture or spectrum of the pulses as well as count information. The
CAPTUS® 600 divides the pulses into 4 energy bands (200, 400, 800 and 1600 keV)
consisting of 256 channels each. Since pulse height is directly related to the energy of the
incident photon, the spectrum displays the pulse heights as a graph of pulses or counts on
the vertical scale and energy on the horizontal scale. By matching the displayed spectrum to
the decay scheme of an isotope, positive identification of the radioactive source can be
achieved.

TECHNICAL SPECIFICATIONS

Thyroid Uptake Stand

Rugged floor stand with heavy duty locking casters and an articulating arm for the positioning
of detector/collimator. Individual shelves provided for the CAPTUS® 600 readout unit and the
printer. Mounting for the isolation transformer and the optional well detector is provided on
the base of the floor stand.

Dimensions: Height 175.3 cm (69")
Width 71.1 cm (28")
Depth 78.7 cm (31")
Weight 181.8 kg (400 lb.)
(with optional well) 213.6 kg (470 lb.)

2-2 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

System Power Requirements

CAUTION
If the input voltage to the following items is not within the stated limits,

the unit may not function correctly or may be damaged.

Line Voltage: 115 or 230 VAC depending on model ordered

Line Frequency: 60 or 50 Hz

Current: 0.7 Ampere @ 115V
0.4 Ampere @ 230V

Fuse: For 115V use T 3.15AH, 250V, (Time Delay)
For 230V use T 2.5AH, 250V, (Time Delay)

Line Filter: Line filter is provided internally.
Use of a filtered line is recommended if excessive line noise is anticipated.

Environment Requirements

Operational
The instrument should be located where the level of the background radiation is as
low and as constant as possible.

The instrument should be located where the temperature is stable within a range of
+50°F to +85°F (+10°C to +30°C) and the maximum relative humidity is 90% non-
condensing to warrant maximum reliability and accuracy.

The instrument should be located where the barometric pressure is within a range of
27–31 inches of mercury (91–105 kilopascals).

Storage
The instrument should be stored where the temperature is stable and the range is
from +39°F to +110°F (+4°C to +43°C) and the maximum relative humidity is 90%
non-condensing to warrant maximum reliability.

The instrument should be stored where the barometric pressure is within a range of
15–33 inches of mercury (51–112 kilopascals).

CAUTION
If these environmental requirements are not followed,

the instrument may display erroneous readings.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-3

CAPINTEC, INC. CAPTUS® 600

Isolation Transformer

An isolation transformer is provided with the CAPTUS® 600 system to ensure that the
leakage current meets EN60601-1-1 Medical Equipment Safety Standard. A detachable
4.6m (15 ft) power cord, with a hospital grade plug, is provided to connect the isolation
transformer to the power source. Dual power line fuses are provided at the power entry
module for quick replacement.

Dimensions: Height 13.3 cm (5.25")
Width 17.5 cm (6.88")
Depth 10.9 cm (4.31")

Printer

Okidata 184 Turbo
80 column dot matrix printing mode.
Graphics and near letter quality text printing

Power Requirements: 115V 0.4A 50/60Hz

Dimensions: Height 8.1 cm (3.2")
Width 36.0 cm (14.2")
Depth 27.4 cm (10.8")
Weight 4.5 kg (10 lb.)

Readout Unit
256 channel MCA with LCD display

Power Requirements: 30 Watts
115V 0.3A 50/60Hz

Power Conditioning: Power Line Filter
Transient Voltage Suppressers
Dual Power Line Fuses

Dimensions: Height 16.5 cm (6.5")
Width 26.7 cm (10.5")
Depth 35.9 cm (14.125")
Weight 4.5 kg (10 lb.)

Nuclear Data

9 Pre-set nuclide data keys
5 User assignable nuclide data keys
Over 60 nuclides in memory (major gamma-ray energies and intensities, half-life)

2-4 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

Calibration Source Data
Memory for Cs137 (1 source for Probe, 1 source for Well)

Multichannel Pulse Height Analyzer

256 Channels
4 Gain Ranges (1, 2, 4, 8 keV per channel)
Automatic self-calibration
Linearity - within 2% of full scale
Differential Linearity - within 2% of full scale
A/D Conversion time - 35 µsec - Maximum count rate 25,000 cps (real time)
Low energy discrimination level - programmable down to 5 keV
Region of Interest - automatic or manual
Background subtraction and mean energy calculation via curve fittings
Linear display - automatic or manual
Automatic Full Width - Half Max (FWHM) measurement
Auto-ranging counts full scale
Maximum recommended dead time - 80%

Diagnostics and Test

Full system self-diagnosis including all program and data memories
Comprehensive test programs

Utilities

System Setup
Data entries (wipe test locations, staff bioassay data, nuclear data, etc.)
Staff bioassay report generation
Multichannel Analyzer (MCA)

Display

Blue Liquid Crystal Display with Cold Cathode backlighting and automatic screen

saver

Size: 6.0 × 12.0 cm (2.4" × 4.7")

Resolution: 128 × 256 pixels

Two Separate Inputs

Probe Detector Input*
Well Detector Input*
*(Individual High Voltage Power Supplies for each Detector Input)

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-5

CAPINTEC, INC. CAPTUS® 600

Probe Detector

NaI(TI) flat face crystal / PM Tube: 5.1 x 5.1 cm (2" x 2")
Features Monoline construction
Pulse Height Resolution - 8% or better for Cs137

Lead Shielded Collimator
Complies with ANSI Standard N44.3-1973
Lined with brass to minimize back scatter

Well Detector – Optional

Single 3.1 m (10 ft) High Voltage and Signal coax cable for placement of well off of

stand

NaI(TI) well type crystal / PM Tube: 5.1 x 5.1 cm (2" x 2")

Well diameter: 1.6 cm (0.625")

Well depth: 4 cm (1.5")

Featuring Monoline construction

Pulse Height Resolution – 8.5% or better for Cs137

Lead shielding – lined with brass (0.16 cm (1/16”) thick) to minimize back scatter

Thickness: 2.5 cm (1")

Height: 39.4 cm (4.5")

Diameter: 11.4 cm (4.5")

Weight: 31.8 kg (70 lb.)

Regulatory Listings
The CAPTUS® 600 has been independently tested and is manufactured in compliance with
the following Standards:

EMC
• European Union Norm EN 60601-1-2: Medical Electrical Equipment – Part 1
General Requirements for Safety – Section 1.2 Collateral Standard:
Electromagnetic Compatibility – Requirements and Tests

Electrical
• European Union Norm EN 60601-1: Medical Electrical Equipment – Part 1
General Requirements for Safety

• European Union Norm EN 60601-1-1: Medical Electrical Equipment – Part 1
General Requirements for Safety – Section 1.1 Collateral Standard: Safety
Requirements for Medical Electrical Systems

ETL Listed

2-6 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

FUNCTIONAL DESCRIPTION

Thyroid Uptake
The CAPTUS® 600 Thyroid Uptake / Well System is intended to be used by trained Nuclear
Medicine Technologists for performing Thyroid Uptake, Thyroid Bioassay, Wipe Test, Blood
Volume (with Cr-51 or I-125) Test, Shillings Test and RBC Survival Test.

Many of the Thyroid Uptake measurements are performed in exactly the same way at a
particular institution for a certain set of patients. To take advantage of this fact, the CAPTUS®
600 Thyroid Uptake System is organized using the concept of protocols.

By using protocols, a set of measurement and data inputs can be defined in advance of
patient requirements. At the time of measurements, the system will prompt the technician for
the necessary patient data, dose information, dose administration times, and prompt the user
for which measurements are to be taken.

Upon taking the measurements, the CAPTUS® 600 will perform the uptake calculations,
including any decay correction.

The basic concept of the Thyroid Uptake measurement with the CAPTUS® 600 remains the
same for any protocol used. The uptake of the thyroid gland is equal to some portion of a
dose previously administered to the patient. However, there are three methods of calculation
to choose from.

Thyroid Uptake Nuclides
Thyroid Uptake Studies may be performed on the CAPTUS® 600 using I123, I131 or Tc99m.
The nuclide is chosen when entering the protocol.

Pre-Dose Measurement
When a patient has been given the same nuclide that will be used in the Thyroid Uptake
Study, a more accurate result can be obtained by measuring the neck and thigh before the
dose is given. The result of this measurement will be subtracted from the actual neck and
thigh measurements.

The option to perform this Pre-Dose Measurement is chosen as part of the protocol.
Choosing this option does not force you to perform the measurement. It can be skipped if it is
not necessary.

Thyroid Uptake Protocols
The calculation method is chosen when the protocol is entered. The three calculation
methods follow.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-7

CAPINTEC, INC. CAPTUS® 600

One Capsule Method
A capsule is measured in a neck phantom. The same capsule is then administered to
the patient. At a later time, the patient returns and the Thyroid (neck) counts and thigh
counts are measured. The uptake is then calculated as:

% Thyroid Uptake = Neck Counts - Thigh Counts ×100
Decay Corrected Capsule Counts

Standard Capsule Method

This method allows for a calculation of System efficiency with a capsule in a neck
phantom and a Thyroid Uptake calculation based upon the patient dose measured in
a dose calibrator. With this method, only one standard capsule needs to be measured
and stored. Usually this standard capsule is from the same lot of capsules as the
capsules being administered to the patient. To use this method, a standard capsule is
measured at least once daily in a neck phantom and the CAPTUS® 600 calculates
efficiency in cpm/μCi.

The patient is administered a capsule whose activity is known and entered into the
CAPTUS® 600 memory.

At a later time, when the patient's thyroid (neck) counts and thigh counts are
measured, the uptake is calculated as:

% Thyroid Uptake = Neck Counts - Thigh Counts ×100

EFF × Corrected Activity of Patient Capsule

Two Capsule Method
In this method, one capsule is administered to the patient, while one is stored for later
measurement as a reference capsule.

At a later time when the patient returns for an uptake measurement, the reference
capsule is measured in a neck phantom and the patient neck & thigh are measured.
The uptake is calculated as follows:

% Thyroid Uptake = Neck Counts - Thigh Counts ×100
Reference Capsule Counts

It is important to note that any difference in the original activity of the reference and
administered capsules has a direct effect on the Thyroid Uptake Result.

With this method, there should be as little time as possible between the measurement
of the reference capsule and the patient’s measurement because no decay correction
is made.

2-8 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

Multi-Capsules
In the One Capsule method, the patient’s dose can be more than one capsule. In the
Two Capsule method, the patient’s dose and the reference can be more than one
capsule.

There are four possible choices for Multi-Capsules option:

NO:
Only one capsule may be used.

ONE:
One capsule is measured and the result is multiplied by the number of
capsules. When this method is used, it is important that all the capsules have
the same activity to a high degree of accuracy.

EACH:
Each capsule is measured separately and the individual results are added to
obtain the actual activity.

ALL:
All the capsules are measured together.

Wipe Tests

The Wipe Test measures radioactive contamination for nuclear medicine departments and
laboratories, as mandated by state and federal radiation safety requirements.

Lab Tests – Urine

Schilling Test

The Schilling test utilizes Cobalt 57 labeled Vitamin B-12 and is used to determine B-12
deficiencies from either malabsorption, lack of intrinsic factor (pernicious anemia), or
intraintestinal destruction. The test entails collection of urine for 24 or 48 hours after the
oral administration of radioactive labeled vitamin B-12. The ratio of excreted to
administered Co-57 is calculated. If the initial results indicate a reduced amount of
excreted vitamin, the test is repeated with a second sample of labeled B-12 and intrinsic
factor.

November 07 FUNCTIONAL & TECHNICAL DESCRIPTION 2-9

CAPINTEC, INC. CAPTUS® 600

Lab Tests – Blood
Blood Volume Test
Blood Volume determinations involving radioactive tagging are most frequently used in
specific disease conditions when the hematocrit may not accurately estimate true blood
volume. Such conditions include extensive trauma or burn patients, certain types of
anemia, and polycythemia. Most frequently used radioactive tracers are protein labeled I-
125 for plasma measurements and Cr-51 tagged RBC’s for red cell mass determinations.

RBC Survival Test
RBC survival determinations involving radioactive tagging are most frequently used in
diagnosis of hemolytic anemia. The CAPTUS® 600 software and default counting
parameters follow the testing protocol outlined in the Mallinckrodt RBC Survival
Instructions which utilize Sodium Chromate Cr-51 Injections. The software standardizes
the 24 hour sample to 100% survival, and automatically decay corrects each subsequent
sample. This permits the user to measure each sample as soon as it is collected. For this
reason, all sample volumes must be the same. Each sample must also have a hematocrit
(HCT) measurement. The subsequent samples are corrected for any differences in
hematocrit.

Staff Bioassay

All staff members who work with Iodine-131, Iodine-125, or Iodine-123 need to have regular
Bioassay measurements taken to monitor exposure levels. Most state and federal radiation
safety regulations mandate that these thyroid measurements be taken periodically.

The CAPTUS® 600 can store data for up to 20 staff members for bioassay measurements.
The CAPTUS® 600 uses one bioassay protocol, which is user-defined. Before using the
Capintec CAPTUS® 600 system to perform bioassay measurements on the staff, the staff
member names, ID numbers and initials should be stored in the CAPTUS® 600 memory (if
not, the results can't be saved), as well as the parameters for the bioassay protocol.

2-10 FUNCTIONAL & TECHNICAL DESCRIPTION November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 3

GENERAL OPERATING OVERVIEW

TURN ON SYSTEM

Locate the black on/off switch, which is on the back panel of the CAPTUS® 600 at the right
side. To turn the system on, push the switch up toward the white vertical line; to turn the
system off, push the switch down toward the white circle.
Note: Make sure that the CAPTUS® 600 is turned on for at least 30 minutes before

performing any measurement functions. If the device is not thoroughly warmed up,
measurements may not be accurate.

Note: It is recommended that you leave the system turned ON all the time.

When you first turn the system on, the Startup Screen (Figure 3-1) appears on the display.

14:32

THYROID UPTAKE SYSTEM
CAPTUS™-600

REV X.XX
COPYRIGHT 1994 ALL RIGHTS RESERVED

CAPINTEC, INC. NJ USA

Press Any Key to Continue

Figure 3-1

Press any key to continue.

LOG-ON PASSWORD

A password is required to gain access to the program.

The Log-on password screen will appear as shown in Figure 3-2.

November 07 GENERAL OPERATING OVERVIEW 3-1

CAPINTEC, INC. CAPTUS® 600

ENTER
PASSWORD:

Figure 3-2

The password (which CANNOT be changed) for all CAPTUS® 600 systems consists of 6
characters. The password is 897NNN where NNN is the last three digits of the serial number.
The serial number can be found on the data sheet shipped with your CAPTUS® 600 system,
as well as in the upper right corner of all printouts from your CAPTUS® 600.

Input the password (“#” will be displayed in place of each character) and press ENTER.
Figure 3-3 or Figure 3-4 will appear.

SYSTEM FUNCTIONS

The functions of the CAPTUS® 600 can be divided as follows:
• PROBE functions – Thyroid Uptake Studies
Bioassay of Personnel

• WELL functions – Wipe Test Monitoring
Schilling Tests
Blood Volume Studies
Red Blood Cell Survival Studies

• UTIL functions – Multichannel Analyzer
Staff Bioassay Results
Setup
Diagnostics

• TEST functions – Testing of Well and Probe

3-2 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600
14:32
PROBE SCREEN

The Probe Screen is shown in Figure 3-3.
PROBE

F1 F2 F3 F4
BIO
T/U STAND

Figure 3-3

WELL SCREEN 14:32

The Well Screen is shown is Figure 3-4.

WELL

F1 F2 F3 F4
W IPE LAB

Figure 3-4

November 07 GENERAL OPERATING OVERVIEW 3-3

CAPINTEC, INC. CAPTUS® 600

HOME Key

Pressing the HOME key when performing a Probe function returns the CAPTUS® 600 to the
Probe Screen (Figure 3-3).

Pressing the HOME key when performing a Well function returns the CAPTUS® 600 to the
Well Screen (Figure 3-4).

Note: If, for any reason, you need to abort a CAPTUS® 600 measurement or procedure,
press the HOME key. As a rule, however, there will be a “soft” [ABORT] or [EXIT]
key, or you can use the Backspace key to exit or abort from a procedure.

Changing from PROBE to WELL Functions

To perform a Well function after performing a Probe function, press HOME and then press
the WELL key.

Note: Even if you are using the Probe as a Well, you still press the WELL key for
measurements of wipe, urine, and blood samples.

Changing from WELL to PROBE Functions

To perform a Probe function after performing a Well function, press HOME and then press
the PROBE key.

CONTRAST

Located on the back panel, a control knob used to adjust the visual contrast of the
information on the liquid crystal display screen.

SCREEN DIMMER

When the CAPTUS® 600 system is on, but the keyboard has not been used for a few
minutes, the back-lit screen suddenly becomes dimmer. As soon as you press a key, the
screen returns to its normal bright display, but the key's function is not performed.

3-4 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

FUNCTION Keys

The Keys labeled F1, F2, F3, F4 – across the top row at the left side of the keyboard – are
function keys. They correspond to the rectangles at the bottom of certain screens (as in
Figure 3-3 and Figure 3-4). The F1 key corresponds to the first rectangle, the F2 key
corresponds to the second rectangle, and so on.

For example, when the screen shows the Probe Screen (Figure 3-3), pressing the F1 [T/U]
key selects the Thyroid Uptake function; pressing the F4 [BIO] key selects the Staff Bioassay
function. When the screen shows the Well Screen (Figure 3-4), pressing the F1 [WIPE] key
accesses the Wipe Test Monitor program; pressing F2 [LAB] key accesses programs for
Schilling or Blood Laboratory tests.

When the rectangles at the bottom of the screen are blank, the corresponding function key
does not work for that particular screen.

These keys are sometimes referred to as “SOFT” keys.

PRINT Key

The small square at the lower right side of the function keys corresponds to the PRINT key.
The PRINT key works only when a P appears in this square on the screen. Use the PRINT
key to obtain printouts of measurement results, protocols, patient data, and other reports.

UTIL Key

The UTIL Key accesses the main Utilities menu (Figure 3-5). Utility functions include setting
the time and date on the CAPTUS® 600 system, calibration, staff data, and system
diagnostics. The UTIL key is active from the Probe or Well Screens.

U T IL IT IE S 14:32

1. Multichannel Analyzer
2. Staff Bio Assay Results
3. Setup
4. Diagnostics

0. Return to Probe Screen

Figure 3-5

November 07 GENERAL OPERATING OVERVIEW 3-5

CAPINTEC, INC. CAPTUS® 600

Note: The “0” on this screen will say “Return to Probe Screen” or “Return to Well Screen”
depending upon Main Screen (Figure 3-3 or Figure 3-4) from which you entered
Utilities.

KEYBOARD

The CAPTUS® 600 keyboard is used to select functions and to input data (letters, numbers
and radionuclide names). Most keys are labeled with more than one symbol. The 1 Key, for
example, serves as both the 1 and E keys. Several keys are labeled with letters and
radionuclide names. The system automatically accepts the appropriate symbol for the
function you are performing. For some screens, you can select whether the keys will input
letters or numbers.

BSP Key

The BSP key serves 2 functions.

When using the keyboard to input words or numbers, incorrect entries can be corrected by
using the backspace BSP key to back up and erase a current entry. This key, located just
above the ENTER key, erases characters one at a time.

When the keyboard is not being used to enter a value, the BSP key can be used to back step
through the current procedure. For example, in a multiple screen entry such as Thyroid
Uptake Protocol, the BSP key can be used to return to the previous entry screen to re-enter
any value.

PROMPT

Many screens include a prompt character; a triangular marker (>) that shows where on the
screen data is input or selected.

ARROW Keys

The ARROW keys are located on the bottom row of the keyboard, just to the left of the
ENTER key. (The RIGHT/DOWN ARROW is also the space SP (Space) key.)

The ARROW keys move the prompt around the screen. The arrows on the CAPTUS® 600
keyboard are slanted because they each work for two directions. The UP ARROW key is
also the LEFT ARROW key; the DOWN ARROW key is also the RIGHT ARROW key. On
any screen, the prompt will only move up and down, or left and right, so there will be no
confusion about which arrow to use.

3-6 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

ALPHANUMERIC ENTRIES

When a number or alphanumeric value is to be entered, the prompt will appear. After the first
character is entered, the cursor (a filled in rectangle) will appear at the next character to be
entered. When the last character is entered, the cursor will appear over the character to
indicate that no more characters may be entered. If another number or letter is pressed, a
beep will sound.

Always press the ENTER key after inputting a line of data. Pressing ENTER moves the
cursor to the next line or back to the top line if you are on the last line. (If the system beeps
and doesn't move when you try to exit a screen, you probably forgot to press the ENTER key
after your last entry.)

On a screen with more than one alphanumeric entry, the ARROW keys can be used to move
the prompt to the next line without entering any data.

Entries with Number and Letters

Some entries (e.g., RX ID, Hospital Name) can have both numbers and letters. For these
entries, the F1 key is used to switch between numbers and letters. When the screen is
displayed, F1 will be “NUM”. This means that the entry will be in letters and the F1 key is to
be pressed to change to numbers. If the first character is to be a number, press F1 [NUM]
before beginning the entry. The key will change to F1 [LET] which means that the entry will
be in numbers. The F1 key can be pressed during the entry so that it can contain both
numbers and letters.

Example: To enter ABC123DEF
Press A, B, C
Press F1 – “LET” will be displayed
Press 1, 2, 3
Press F1 – “NUM” will be displayed
Press D, E, F
Press ENTER

SPACE Key

The SP (Space) key is on the DOWN ARROW and is considered a letter.

Decimal Point

The decimal point is on the UP ARROW key. If this key is pressed as the first key in an entry,
it will be interpreted as an UP ARROW. Therefore, a decimal point cannot be the first
character in an entry. To enter a number less than 1, begin with a 0 (zero).

November 07 GENERAL OPERATING OVERVIEW 3-7

CAPINTEC, INC. CAPTUS® 600

BLANK ENTRIES

While some entries are optional and may be left blank (for example, patient’s date of birth)
most are required and must be filled in. If the [OK] key is pressed while a required entry is
blank, the following message appears:

ALL FIELDS MUST BE FILLED

Press Any Key to Continue

Press any key, and then enter the required value.

INVALID VALUES

If you input a value that's unacceptable, the following error message appears:

INPUT OUT OF RANGE

Press Any Key to Continue

Refer to the section DATA ENTRY INPUT LIMITS on page 3-11 for a list of valid input
values.

ENTERING DATE and TIME

For some applications, the CAPTUS® 600 system will ask you to input a time or date. Always
input digits, with no spaces, colons, or other punctuation marks. The CAPTUS® 600 runs on
a 24-hour clock. For example, 9:30 a.m. would be input as 9, 3, 0, ENTER; while 9:30 p.m.
would be input as 2, 1, 3, 0, ENTER.

The Date can be entered in one of three formats: MONTH DAY YEAR (default), DAY
MONTH YEAR or YEAR MONTH DAY.

SETUP PASSWORD

A password is required to gain access to the SETUP choice from the main Utilities Menu.
The password (which CANNOT be changed) for all CAPTUS® 600 systems consists of the

last three digits of the serial number. When the word “PASSWORD:” appears on the screen,

type these three numbers and press ENTER (your entry will not be displayed). The serial
number can be found on the data sheet shipped with your CAPTUS® 600 system, as well as
in the upper right corner of all printouts from your CAPTUS® 600.

3-8 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

YES or NO Answers

Whenever a question is asked, it must be answered Yes or No.

Answer the question by pressing Y and ENTER for YES or N and ENTER for NO.

You can change a YES to a NO answer, and vice versa, if you have not yet pressed the
ENTER key. When you press Y, the word “YES” appears on the screen. If you want to
change this answer to NO, press the backspace BSP key. The word “YES” disappears. Then
press N. The word “NO” appears. Then press the ENTER key to confirm this answer.

COUNTING METHODS

The CAPTUS® 600 offers two methods of counting time: REAL time and LIVE time. The
Multichannel Analyzer (MCA) in the CAPTUS® 600 measures each pulse that comes out of
the Sodium Iodide/Photomultiplier tube detector. To measure each pulse requires a finite
amount of time. During the time the MCA is measuring the pulse another pulse cannot be
measured. Any other pulse that occurs during this time is not measured, and therefore, lost.
During this time, the MCA is said to be DEAD.

Live Time is defined as the time during which the MCA can actually measure a pulse.

Real Time is defined as the actual clock interval.

The Percent Dead Time is the Dead Time divided by the clock interval expressed as percent.
The Percent Dead Time increases as counting rate increases. To ensure accurate results,
the Dead Time should not exceed 80%. Moving the source further away from the detector
can decrease the Percent Dead Time. Dead Time is shown in the upper right hand corner of
all measurement screens and is abbreviated as dt.

When selecting a counting method, it is possible to choose a time base called LIVE or REAL.

If Live Time is chosen, the CAPTUS® 600 counts until the MCA's “LIVE” time reaches the
specified counting period. The actual counting time is always greater than or equal to the
requested live time.

If Real Time is chosen, the CAPTUS® 600 counts until the actual clock interval reaches the
specified count period. The count rate is calculated from measured Live Time.

November 07 GENERAL OPERATING OVERVIEW 3-9

CAPINTEC, INC. CAPTUS® 600

MEASUREMENT ERRORS

During measurements, each screen gives you instructions on what to measure with the
probe or well and what information to input with the keyboard. If a measurement does not fall
within a certain expected range, the screen displays the following message:

MEASUREMENT ERROR

Press Any Key to Continue

The following are just a few examples of situations that could trigger this error message:

• The Thyroid Uptake Protocol calls for Iodine-131, but the capsule you measure
contains Iodine-123.

• The system asks for a measurement, but the sample is not in the Probe or Well.
• The system is out of calibration causing the nuclide’s peak to appear outside of the

acceptable limits.

When you press any key, the screen goes back to the measurement you just performed so
you can correct the situation and repeat the measurement.

HIGH VOLTAGE ADJUSTMENT

The CAPTUS® 600 has two analog coarse high voltage controls, which are independently set
for each detector (Probe and Well). These controls are used for the initial calibration and
manual re-calibration of the unit (if Autocalibration fails).

Adjustment clockwise of these two controls increases the voltage and counter clockwise
decreases the voltage.

Note: The setting of these controls should not be changed unless directed by a Capintec
Service Representative. Unauthorized adjustment of these two controls will invalidate
the calibration of the unit.

OFFSET VOLTAGE ADJUSTMENT

The CAPTUS® 600 has two offset voltage controls, which are independently set for each
detector (Probe and Well). These controls are used for the initial calibration and manual re-
calibration of the unit (if Autocalibration fails).

Adjustment clockwise of these two controls increases the voltage and counter clockwise
decreases the voltage.

Note: The setting of these controls should not be changed unless directed by a Capintec
Service Representative. Unauthorized adjustment of these two controls will invalidate
the calibration of the unit.

3-10 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

DISPLAY CONTRAST ADJUSTMENT

This adjustment controls the contrast of the Readout LCD. Perform adjustment until LCD
screen displays the best contrast.

DATA ENTRY INPUT LIMITS

Thyroid Uptake Protocols

REGIONS OF INTEREST

I123 I131 Tc99
10 – 60% 10 – 40%
Left of peak 10 – 40% 10 – 25% 10 – 25%

Right of peak 10 – 25%

COUNTING TIME 10-999 seconds
NUMBER OF TESTS 1–4
NUMBER OF REPETITIONS 1 or 2

Thyroid Uptake Measurements 15 – 40 cm
1–4
DISTANCE
NUMBER OF CAPSULES

DOSE & THYROID UPTAKE STANDARD

I123 10. – 600. μCi 0.37 – 22.2 MBq

I131 1. – 9973. μCi 0.037 – 369. MBq

Tc99m 1. – 9973. μCi 0.037 – 369. MBq

DOSE
Rx ID NUMBER 19 characters

THYROID UPTAKE STANDARD
ID NUMBER 10 characters

Cs137 Standard 3.7 - 9250. kBq
0.37 - 37. kBq
ACTIVITY LIMITS
PROBE .1 - 250. μCi
WELL .01 - 1.0 μCi

Note: The source must be positioned so that the maximum count rate is not
exceeded.

November 07 GENERAL OPERATING OVERVIEW 3-11

CAPINTEC, INC. CAPTUS® 600

Bioassay Protocol Range Default
2 – 20 % 8.5%
X-RAY / GAMMA RAY (I 131) 2 – 100% 92%
X-RAY / GAMMA RAY (I 123) 15 – 40cm 25 cm
DISTANCE

Additional Nuclide

HALF-LIFE .1 – 9999.9 (for M, H, D, Y)
ENERGY 20 – 1800 keV

Blood Volume .01 – 99 %
.01 – 999 kg
HEMATOCRIT
PATIENT WEIGHT

RBC Survival Measurement

10 Measurements Per Patient
2 patients in memory

Patient Demographics

LAST NAME 20 Characters
FIRST NAME 20 Characters
ID # 20 Characters
PHYSICIAN 24 Characters

Wipe

Description
ROOM 8 Characters
NAME 16 Characters

Background Counting
60 seconds minimum

Generic Conversion Factors
maximum of 24.9

3-12 GENERAL OPERATING OVERVIEW November 07

CAPINTEC, INC. CAPTUS® 600

Trigger Levels Range (Ci) Range (Bq) Default (Ci)
60 – 9999 cpm 1 – 166.65 cps 2000 cpm
BACKGROUND 60 – 9999 dpm 1 – 166.65 Bq 2000 dpm
WORK 60 – 9999 dpm 1 – 166.65 Bq 200 dpm
UNRESTRICTED 0.1 – 270 nCi 3.7 – 9990 Bq
RECEIVING, SEALED SOURCE 5 nCi

Staff Data 20 Characters
20 Characters
LAST NAME 20 Characters
FIRST NAME 3 Characters
ID # 1 Character
Initials
Mid

November 07 GENERAL OPERATING OVERVIEW 3-13



CAPINTEC, INC. CAPTUS® 600

CHAPTER 4

SYSTEM SETUP

INSTALLATION

Your system has been shipped from the factory pre-configured and fully tested. Installation
consists of placing the components on the stand and securing them in place as shown in the
CAPTUS® 600 Unpacking and Assembly Instructions document.

ENVIRONMENT REQUIREMENTS

Operational
The instrument should be located where the level of the background radiation is as low and
as constant as possible.

The instrument should be located where the temperature is stable within a range of +50°F to
+85°F (+10°C to +30°C) and the maximum relative humidity is 90% non-condensing to
warrant maximum reliability and accuracy.

The instrument should be located where the barometric pressure is within a range of 27–31
inches of mercury (91–105 kilopascals).

Storage
The instrument should be stored where the temperature is stable and the range is from
+39°F to +110°F (+4°C to +43°C) and the maximum relative humidity is 90% non-condensing
to warrant maximum reliability.

The instrument should be stored where the barometric pressure is within a range of 15–33
inches of mercury (51–112 kilopascals).

CAUTION
If these environmental requirements are not followed,

the instrument may display erroneous readings.

November 07 SYSTEM SETUP 4-1

CAPINTEC, INC. CAPTUS® 600

POWER REQUIREMENTS

CAUTION
If the input voltage to the following items is not within the stated limits,

the unit may not function correctly or may be damaged.

Line Voltage: 115 or 230 VAC depending on model ordered

Line Frequency: 60 or 50 Hz

Current: 0.7 Ampere @ 115V
0.4 Ampere @ 230V

Fuse: For 115V use T 3.15AH, 250V, (Time Delay)
For 230V use T 2.5AH, 250V, (Time Delay)

Line Filter: Line filter is provided internally.
Use of a filtered line is recommended if excessive line noise is anticipated.

TURN ON PROCEDURE

Once the system components are mounted securely and all cables are connected you are
ready to turn the system on. There are two power switches associated with the system: the
Readout Unit has a power switch located at the rear of the unit and, the Printer has a power
switch.

Your system will power up and display the CAPTUS® 600 Start Up Screen (Figure 4-1)

14:32

THYROID UPTAKE SYSTEM
CAPTUS™-600

REV X.XX
COPYRIGHT 1994 ALL RIGHTS RESERVED

CAPINTEC, INC. NJ USA

Press Any Key to Continue

Figure 4-1

4-2 SYSTEM SETUP November 07

CAPINTEC, INC. CAPTUS® 600

GENERAL OPERATIONAL SETUP

There are several things that must be done before using the CAPTUS® 600 Thyroid Uptake
System for the first time. The following briefly describes these steps and refers the reader to
the appropriate section in the owner's manual in order to perform them.

• Verify or set the date/time. Although the date and time are set in the factory, you
should verify that the date and time are correct. Reference CHAPTER 5: SYSTEM
INITIALIZATION, SECTION: DATE & TIME SETUP.

• Set the heading name. The heading will appear at the top of all printouts. It is
recommended that the hospital name, clinic etc. be used for this option. Reference
CHAPTER 5: SYSTEM INITIALIZATION, SECTION: SETTING HOSPITAL OR
FACILITY NAME.

• Select proper units; Ci or Bq. Although the system can be changed at any time, it is
recommended that the user set the proper units prior to using the unit to prevent
confusion. Reference CHAPTER 5: SYSTEM INITIALIZATION, SECTION:
CURIES/BEQUEREL SETUP.

• Calibration Standard Source Setup: The conversion factor for the standard source
(Cesium-137) used to calibrate the CAPTUS® 600 should also be entered or
measured. The CAPTUS® 600 uses a Cs137 source to calibrate daily. Data about this
source should be entered into the CAPTUS® 600. Reference. CHAPTER 5: SYSTEM
INITIALIZATION, SECTION: Cs137 STANDARD SETUP.

• Chi-Square Setup: Before performing this test, the number of repetitions and
counting time intervals must be input. Reference CHAPTER 5: SYSTEM
INITIALIZATION, SECTION: CHI-SQUARE TEST SETUP.

• Conversion Factors Setup: In order for the CAPTUS® 600 to calculate the activity of
a radionuclide, the Conversion Factor for the radionuclide must be stored in the
CAPTUS® 600 system. The Conversion Factor for the standard source (Cs137) used
to calibrate the CAPTUS® 600 should also be entered or measured. Reference
CHAPTER 5: SYSTEM INITIALIZATION, SECTION: CONVERSION FACTORS.

ACCEPTANCE TESTING

The following tests must be performed prior to operational use of the unit.

• Diagnostics Test: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: DIAGNOSTICS for instructions on how to perform
this test.

• Calibration Test: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: CALIBRATION TEST for instructions on how to
perform this test.

November 07 SYSTEM SETUP 4-3

CAPINTEC, INC. CAPTUS® 600

• Chi-Square Test: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: CHI-SQUARE TEST for instructions on how to
perform this test.

• Minimum Detectable Activity: Reference CHAPTER 6: ACCEPTANCE & QUALITY
ASSURANCE TESTS, SECTION: MDA TEST for instructions on how to perform this
test.

SETTING UP FOR THYROID UPTAKES OR WIPE TESTS

• In order to perform Thyroid Uptake Measurements, the Thyroid Uptake Setup must be
performed first. Reference CHAPTER 7: THYROID UPTAKE SETUP.

• In order to perform Wipe Tests with the CAPTUS® 600, the Wipe Setup must be
performed first. Reference CHAPTER 12: WIPE TEST SETUP.

SETTING UP FOR LAB TESTS (URINE & BLOOD)

• Before performing any of the Lab Tests please reference CHAPTER 13: LAB TESTS
SETUP.

SETUP FOR STAFF BIOASSAY

• In order to perform the Bioassay procedure, the Staff Bioassay Setup must be
performed first. Reference CHAPTER 17: STAFF BIOASSAY, SECTION: STAFF
BIOASSAY DATA.

SETUP FOR MULTICHANNEL ANALYZER

• Four MCA Setups can be stored in the CAPTUS® 600. Reference CHAPTER 18:
MULTICHANNEL ANALYZER SETUP.

4-4 SYSTEM SETUP November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 5

SYSTEM INITIALIZATION

DATE & TIME SETUP

Date Entry Format
Although dates are displayed as month-day-year, the date is entered in numeric format (2
digits for month, 2 digits for day, 2 digits for year).

This format differs around the world. You may use this feature to choose the format that you
use.

The format choices are:
• MONTH-DAY-YEAR,
• DAY-MONTH-YEAR, or
• YEAR-MONTH-DAY.

The default is MONTH-DAY-YEAR.

When the Setup Menu appears, press 8 to select OTHER. The Other menu (Figure 5-1) will
appear.

14:32

1. SET DATE/TIME
2. DATE ENTRY FORMAT
3. HOSPITAL NAME
0. RETURN TO SETUP MENU

Figure 5-1

Press 2 to select DATE ENTRY FORMAT. The currently selected format (or the default) will
be displayed as shown in Figure 5-2.

November 07 SYSTEM INITIALIZATION 5-1

CAPINTEC, INC. CAPTUS® 600

CHOOSE DATE ENTRY FORMAT
FORMAT: MMDDYY

FORM OK
Figure 5-2

Press F1 [FORM] to switch from MMDDYY to DDMMYY to YYMMDD.
When the desired format is displayed, press F4 [OK].

Changing the Time and Date Setting
The Capintec CAPTUS® 600 has an internal clock so that the date and time of all procedures
can be documented. It is important that Date and Time be set properly before using the
CAPTUS® 600. All sources are decay corrected based upon the CAPTUS® 600 internal
clock.

When the Other menu appears (Figure 5-1), press 1 to select SET DATE / TIME. The current
date and time will be displayed (Figure 5-3).

IT IS NOW
OCT 06 2007 11:01
DO YOU WANT TO CHANGE
DATE OR TIME?

Figure 5-3
If the Date and/or Time needs to be changed, press Y and then press the ENTER key.

5-2 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

The Date and Time Entry Screen (Figure 5-4) will appear with the current date and time as
the defaults. The examples will be shown with the Date Entry Format that has been chosen
(or the default of MMDDYY if no choice has been made).

DATE: OCT 18, 2007

TIME: 11:01

Example: July 4 1994 9:05pm
070494 2105

Example: 9:05am OK
0905

Figure 5-4

To change the date, input six digits that represent the current date, and press the ENTER
key.

To change the time, input the three or four digits that represent the current time, and press
the ENTER key.

Press F4 [OK] when both date and time are correct.

The new date and time will then be displayed for verification.

SETTING HOSPITAL OR FACILITY NAME

All printouts from the Capintec CAPTUS® 600 include your hospital or facility name and
address.

The Hospital Name consists of up to 4 lines of 30 characters each.

When the Other menu appears (Figure 5-1), press 3 to select HOSPITAL NAME. The
currently entered Hospital Name (or blank if it has never been entered) will appear as shown
in Figure 5-5.

November 07 SYSTEM INITIALIZATION 5-3

CAPINTEC, INC. CAPTUS® 600

13:06

HOSPITAL NAME
>

NUM OK
Figure 5-5

Input up to 4 lines for the hospital name.

Press F1 [NUM] to switch to numeric input and display “LET” for F1.

Press F1 [LET] to switch back to letter input and display “NUM” for F1.
Press F4 [OK] when the entry is correct.

“PLEASE WAIT” will appear on the screen while the Hospital Name is being saved in
memory.

CURIES / BECQUEREL SETUP

The CAPTUS® 600 can display units of radiation measurements in Curies or Becquerels.
Setting the units to Curie or Becquerels in this section configures the entire CAPTUS® 600.
All data entry will be in the system units. All displays and printouts are always in the system
units. If the system units are changed with the following setup procedure, all values are
recalculated.

To change these units of measure, press the HOME key and then the UTIL key. The main
Utilities Menu (Figure 5-6) will appear.

5-4 SYSTEM INITIALIZATION November 07

CAPINTEC, INC. CAPTUS® 600

UTILITIES 14:32

1. MULTI CHANNEL ANALYZER
2. STAFF BIO ASSAY RESULTS
3. SETUP
4. DIAGNOSTICS

0. RETURN TO PROBE SCREEN

Figure 5-6

Press 3 to select SETUP. The message “PASSWORD:” will appear. Type the last three digits
of your CAPTUS® 600 serial number, and press the ENTER key. The Setup menu (Figure 5-
7) will appear.

Note: Selection 0 will display “RETURN TO WELL SCREEN” if the Utilities menu is
accessed from the Well Main Screen.

SETUP 14:32

1. Ci/Bq
2. TEST DATA
3. THYROID UPTAKE
4. BIO ASSAY
5. AUTO CALIBRATION
6. ACTIVITY CONVERSION FACTORS
7. WIPE AND MCA SETUP
8. OTH ER

0. RETURN TO UTILITIES MENU

Figure 5-7

Press 1 to select Ci/Bq. The Ci/Bq Screen appears (Figure 5-8) displaying the current
selection (the default is Ci).

November 07 SYSTEM INITIALIZATION 5-5

CAPINTEC, INC. CAPTUS® 600

ACTIVITY W ILL BE IN Ci

C i/B q OK
Figure 5-8

The F1 [Ci/Bq] key is a toggle switch. When this key is pressed, the screen changes to
Figure 5-9.

ACTIVITY W ILL BE IN Bq

C i/B q OK
Figure 5-9

When the screen displays the correct units of measure, press the F4 [OK] key. The screen
returns to the Setup menu (Figure 5-7).

The entire CAPTUS® 600 will run in the selected units. Any data or measurements already
stored in the unit will be converted to the new unit. This includes Wipe Test Trigger Levels.

5-6 SYSTEM INITIALIZATION November 07


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