CAPTUS 600 Manual

CAPINTEC, INC. CAPTUS® 600

PRINTING RESULTS

After the uptake measurements have been completed, a results summary screen for the
chosen method will be displayed as shown in Figure 8-20. The results of all the uptakes thus
far performed for this patient will be displayed in graphic form:

DASILVA, AND

% 50 ...............*.............................
U 40 ..................................*..........
P
T 30
A 20 ............................................
K ............................................

E 10 ............................................

2 24 hours

AGAIN DONE P

Figure 8-20

The calculated values are indicated by the asterisks(*).

The hours are the actual time intervals rounded to the nearest hour.

The short, solid horizontal lines indicate the minimum and maximum normal values entered
in the protocol (unless 0 and 99 were chosen, which indicates “no” minimum and maximum).

Note: There is a 1 hour time window, before and after the chosen uptake time where the
minimum and maximum value markers will appear on the graph. If the uptake is
measured before or after the window, the result (*) will appear but the minimum and
maximum will not be shown.

Press PRINT [P] to print a report of this Thyroid Uptake study. The information in the report
depends upon the Thyroid Uptake method chosen.

Press F1 [AGAIN] if you realized an error was made in the measurement and want to repeat
the measurement.

Press F4 [DONE] to exit the screen and return to the Patient Selection Screen (Figure 8-2).

November 07 THYROID UPTAKE GENERAL INSTRUCTIONS 8-11



CAPINTEC, INC. CAPTUS® 600

CHAPTER 9

THYROID UPTAKE: ONE CAPSULE
METHOD

GENERAL PROCEDURE

The general procedure for performing a TU study via the One Capsule Method is:
• Enter Patient Demographics
• Choose One Capsule Protocol
• Perform Pre-Dose Measurement (if it is in protocol)
• Enter capsule data
• Measure the capsule(s) and room background
• If Pre-Dose Measurement has not been done, it can be measured now
• Administer the capsule(s)
• Enter capsule administration data
• Perform the uptakes at the indicated times. Measure neck and thigh according to the
directions in CHAPTER 8: THYROID UPTAKE: GENERAL INSTRUCTIONS

The instructions below begin after the protocol is chosen.

PRE-DOSE MEASUREMENT

If the protocol indicates that a Pre-Dose Measurement is to be performed, the measurements
must be made after the protocol is chosen and before the “administered” data is entered. It
can be performed before the capsule data is entered or after the capsule has been
measured.

Reference: CHAPTER 8: THYROID UPTAKE: GENERAL INSTRUCTIONS for performing
Pre-Dose Measurement.

If BSP is pressed from the pre-Dose Measurement screen, you will be returned to the TU
Patient Selection Screen.

November 07 THYROID UPTAKE: ONE CAPSULE METHOD 9-1

CAPINTEC, INC. CAPTUS® 600

ENTERING CAPSULE DATA

The One Capsule Data Entry Screen (Figure 9-1) will appear.

KETCHUM, LIN
PROTOCOL: PROT 1
NUCLIDE: I 131

RX ID :>
NO. CAPS: 1 TO MEASURE

LET OK

Figure 9-1

At the “RX ID” prompt, input the name or identification number of the capsule to be
administered to this patient. The “RX ID” can consist of up to 19 numbers and/or letters.

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.

The default of 1 capsule to be measured is displayed.

The number of capsules to measure depends on the Multi-Capsule option:
• “NO” or “ONE”: The number of capsules to be measured is always 1 and cannot be
changed.
• “EACH” or “ALL”: The number of capsules can be changed.

Press the F4 [OK] key when the data is correct. Figure 9-2 will appear.

KETCHUM, LIN
PROTOCOL: PROT 1
NUCLIDE: I 131

RX ID : I1234
NO. CAPS: 1 TO MEASURE

DONE MEAS
Figure 9-2

9-2 THYROID UPTAKE: ONE CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

Press the F3 [DONE] key if you are not ready to measure the capsule(s). The screen returns
to the TU Patient Selection Screen, with the new patient added to the list.

Press the F4 [MEAS] key to measure the capsule(s).

MEASURING THE CAPSULE(S)

The Capsule Measurement Screen (Figure 9-3) will appear with instructions for measuring
the capsule(s) in the phantom.

THYROID UPTAKE 14:32

KETCHUM, LIN
PROTOCOL: PROT 1

MEASURE I 131
1 CAPSULE IN

AT: >25.0 CM

COUNTING REPETITION # 1 / 2

EXIT START

Figure 9-3

The instructions for measuring the capsules depends on the Multi-Capsule option:

• “NO” or “ONE”: Measure 1 capsule in the phantom.

• “ALL”: Measure the number of capsules that was entered in the One
Capsule Data Entry Screen.

• “EACH”: Measure the #1 capsule, then the #2 capsule until the number of
capsules that was entered in the One Capsule Data Entry Screen
has been measured. Each capsule is measured for the number of
repetitions in the protocol.

If Pre-Dose Measurement has been performed, the distance displayed will be the distance
entered for the Pre-Dose Measurement and the prompt (>) will not be displayed.

If Pre-Dose Measurement has not been performed, the displayed “AT:” distance of 25.0 cm
is the default value of the Probe’s position away from the patient's neck. If this is not the
value to be used for the Thyroid Uptake study, input the correct value. This value will be used
throughout the study and cannot be changed.

Place the capsule(s) in the phantom and press F4 [START] to begin the measurement.

The Counting Screen (Figure 9-4) will appear.

November 07 THYROID UPTAKE: ONE CAPSULE METHOD 9-3

CAPINTEC, INC. CAPTUS® 600

100 dt: 4%
5683. cpm

ABORT CAPSULE 400 keV

Figure 9-4

If the system does not find a peak at the expected energy, the following message will appear:

MEASUREMENT ERROR

Press Any Key to Continue
Check to make sure that the correct capsules are in the Probe, or if any background activity
could be causing interference, and press any key to perform the measurement again.
When the counting period is over, the area below the curve is shaded and the screen
displays total counts as shown in Figure 9-5.

100
5683. cpm
OK?
(Y OR N)

CAPSULE 400 keV

Figure 9-5

If the measurement is not OK, press the N key to answer “NO”, and press ENTER. The
screen returns to the Capsule Measurement Screen (Figure 9-3) to begin this measurement
again.

If the measurement is OK, press the Y key to answer “YES”, and press ENTER. If the
protocol calls for more than one repetition of this measurement, the Capsule Measurement

9-4 THYROID UPTAKE: ONE CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

Screen (Figure 9-3) will re-appear with the last line indicating the next repetition (ex.
Counting Repetition # 2 / 2). The prompt will not appear.

After the last repetition, the screen changes to the Measure Background Screen (Figure 9-6).

THYROID UPTAKE 14:32

KETCHUM, LIN
PROTOCOL: PROT 1

MEASURE
ROOM BACKGROUND

EXIT START
Figure 9-6

Remove the capsules from the Probe and press the F4 [START] key.

Note: The capsule(s) should be located far away from the Probe so that they will not
contribute to the background activity measurement.

The Counting Screen for Room Background (Figure 9-7) will appear and the system
immediately begins counting background activity.

100 dt:
5683. cpm

ABORT BACKGROUND 400 keV
Figure 9-7

When the background count is finished, the Background Verification Screen (Figure 9-8) will
appear.

November 07 THYROID UPTAKE: ONE CAPSULE METHOD 9-5

CAPINTEC, INC. CAPTUS® 600

100
5683. cpm
OK?
(Y OR N)

BACKGROUND 400 keV

Figure 9-8

If the total count, displayed in the upper left corner, is not OK, press the N key to answer
“NO” and press ENTER. The Measure Background Screen (Figure 9-6) will re-appear
allowing the background measurement to be repeated.

If the total count is OK, press the Y key to answer “YES” and press ENTER.

If the protocol calls for Pre-Dose Measurement and it has been skipped, you will have
another chance now to do the Pre-Dose Measurement. If “SKIP” is chosen now, Pre-Dose
cannot be measured for this patient.

ADMINISTERED DOSE

The Administer Dose Screen (Figure 9-9) will appear.

KETCHUM, LIN
PROTOCOL: PROT 1
NUCLIDE: I 131

RX ID : CAPSULE 1

NO. CAPS : 2 TO MEASURE

ADMINISTER DOSE NOW ?
Y OR N

Figure 9-9

Administering the Dose Later
Press N if you are not administering the dose now. Figure 9-10 will appear.

9-6 THYROID UPTAKE: ONE CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

KETCHUM, LIN

PROTOCOL: PROT 1

N U C L ID E : I 131

RX ID : CAPSULE 1

NO. CAPS : 2 TO MEASURE

DONE P
Figure 9-10

Press PRINT [P] to obtain a printout of all information entered so far (patient data, dosage
information, background count).

Press F4 [DONE] to return to the Patient Selection Screen.

Note: You may enter the time of administration later and since the CAPTUS® 600 has
already measured the capsule(s), it will decay correct the capsule counts from the
measurement time to the time of administration and use that value as the initial
counts.

Entering Administered Dose Data

Press Y if you are ready to input the administered dose data. The Dosage Data Screen
(Figure 9-11) will appear.

KETCHUM, LIN
PROTOCOL: PROT 1

A D M IN IS T E R E D

DOSE :> μCi I 131

ON : FEB 14, 1992

AT : 09:30

NO. CAPS: 2 IN DOSE

OK

Figure 9-11

Input the TOTAL “DOSE” in µCi and the number of capsules administered. The Dose is
entered for reference only.

November 07 THYROID UPTAKE: ONE CAPSULE METHOD 9-7

CAPINTEC, INC. CAPTUS® 600

Input the time and date of administration if it is different from the default of “now”.

The number of capsules in the dose depends on the Multi-Capsule option:

• “NO”: The number of capsules in the dose is 1 and cannot be changed.

• “ONE”: The number of capsules in the dose may be entered.

• “EACH” or “ALL”: The number of capsules in the dose is the same as the number
that was measured and cannot be changed.

Press the F4 [OK] key when all the data is correct. Figure 9-12 will appear.

KETCHUM, LIN
PROTOCOL: PROT 1

DONE P

Figure 9-12

Press PRINT [P] to print a report of the capsule data.
Press F4 [DONE] to exit the screen and end the capsule measurement procedure.

UPTAKE MEASUREMENT

When it is time to perform the uptake, select the patient from the patient list and measure the
neck and thigh according to the directions in CHAPTER 8: THYROID UPTAKE: GENERAL
INSTRUCTIONS.

9-8 THYROID UPTAKE: ONE CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

VIEWING RESULTS

After the neck and thigh have been measured, the Results Screen (Figure 9-13) will appear.

CAPSULE (C) : 2915 cpm

NECK (N) : 2400 cpm

THIGH (B) : 1193 cpm

THYROID (T:N-B) : 1207 cpm
DECAY FACTOR (D) : 0.993

NUMBER CAPS (K) : 1

UPTAKE (T/KCD) : 41.7%

ENTER INITIALS:

Figure 9-13

Input your initials and press ENTER. The Graphics Screen (Figure 9-14) will appear.

DASILVA, AND

% 50 ...............*.............................
U 40 ..................................*..........
P
T 30 ............................................
A 20 ............................................
K

E 10 ............................................

2 24 hours

A G A IN DONE P

Figure 9-14

Press PRINT [P] to print a report of this Thyroid Uptake study. Refer to Figure 9-15 for an
example of the printout.

Press F1 [AGAIN] if an error was made in the measurement and the measurement needs to
be repeated.

Press F4 [DONE] to exit the screen and return to the Patient Selection Screen.

Note: Refer to CHAPTER 8: THYROID UPTAKE: GENERAL INSTRUCTIONS for a more
detailed discussion of this display.

November 07 THYROID UPTAKE: ONE CAPSULE METHOD 9-9

CAPINTEC, INC. CAPTUS® 600

Figure 9-15

9-10 THYROID UPTAKE: ONE CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 10

THYROID UPTAKE: TWO CAPSULE
METHOD

GENERAL PROCEDURE

The general procedure for performing a Thyroid Uptake study via the Two Capsule Method
is:

• Enter Patient Demographics
• Choose Two Capsule Protocol
• Perform Pre-Dose Measurement (if it is in protocol)
• Enter capsule administration data
• Perform the uptakes at the indicated times. Measure reference capsule and room

background. Measure neck and thigh according to the directions in CHAPTER 8:
THYROID UPTAKE: GENERAL INSTRUCTIONS

The instructions below begin after the protocol is chosen.

PRE-DOSE MEASUREMENT

If the protocol indicates that a Pre-Dose Measurement is to be performed, the measurements
must be made after the protocol is chosen and before the “administered” data is entered.
There is only one chance to measure Pre-Dose. If “SKIP” is chosen, there will not be another
chance to measure Pre-Dose.

Reference CHAPTER 8: THYROID UPTAKE: GENERAL INSTRUCTIONS for performing
Pre-Dose Measurement.

If BSP is pressed from the Pre-Dose Measurement Screen, you will be returned to the
Thyroid Uptake Patient Selection Screen.

ENTERING ADMINISTERED DOSE

The Administered Data Screen (Figure 10-1) will appear. (If the administered data is not yet
known, press BSP or HOME when this screen appears).

November 07 THYROID UPTAKE: TWO CAPSULES METHOD 10-1

CAPINTEC, INC. CAPTUS® 600

NAME, PAT
PROTOCOL: 2 CAP

A D M IN IS T E R E D

RX ID :> μCi I 131
DOSE :

ON : MAR 12, 1992

AT :11:47

NO. CAPS: 1 FOR REFERENCE

LET OK

Figure 10-1

At the “RX ID” prompt, input the name or identification number of the capsule to be
administered to this patient. The “RX ID” can consist of up to 19 numbers and/or letters.

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.

Input the total dose in µCi and the number of capsules administered. The dose is entered for
reference only.

Input the time and date of administration if it is different from the default of “now”.

The number of capsules depends upon the Multi-Capsule option:

• “NO”: The line is not displayed.

• “ONE”: The number of capsules in the dose can be entered.

• “EACH” or “ALL”: The number of capsules for reference can be entered. The number
of capsules in the dose equals the number for reference.

Press the F4 [OK] key when all the data is correct. Figure 10-2 will appear.

NAME, PAT
PROTOCOL: 2 CAP

A D M IN IS T E R E D

RX ID : I1234
DOSE : 100 μCi I 131

ON : MAR 12, 1992

AT :11:47

NO. CAPS: 1 FOR REFERENCE

DONE MEAS

Figure 10-2

10-2 THYROID UPTAKE: TWO CAPSULES METHOD November 07

CAPINTEC, INC. CAPTUS® 600

Press F3 [DONE] if it is not time to make a Thyroid Uptake measurement.
Press F4 [MEAS] to make a Thyroid Uptake measurement.

MEASURING THE REFERENCE CAPSULE(S)

In the Two Capsule Method, each uptake begins by measuring the reference capsule(s) in a
phantom. The Capsule Measurement Screen (Figure 10-3) will appear.

NAME, PAT
PROTOCOL: 2 CAP

RX ID: 111

MEASURE I

2 CAPSULES IN

AT: >25.0 CM

COUNTING REPETITION # 1 / 2

EXIT START

Figure 10-3

The instructions for measuring the capsules depends on the Multi-Capsule option:

• “NO” or “ONE”: Measure 1 capsule in the phantom.

• “ALL”: Measure the number of capsules that was entered in the
Administered Dose Screen.

• “EACH”: Measure the #1 capsule, then the #2 capsule until the number of
capsules that was entered in the Administered Dose Screen has
been measured. Each capsule is measured for the number of
repetitions in the protocol.

If Pre-Dose Measurement has been performed, the distance displayed will be the distance
entered for the Pre-Dose Measurement and the prompt (>) will not be displayed.

If Pre-Dose Measurement has not been performed and this is the first uptake, the displayed
“AT:” distance of 25.0 cm is the default value of the Probe’s position away from the patient's
neck. If this is not the value to be used for the Thyroid Uptake study, input the correct value.
This value will be used throughout the study and cannot be changed.

Place the capsule(s) in the phantom and press F4 [START] to begin the measurement.

The Counting Screen (Figure 10-4) will appear:

November 07 THYROID UPTAKE: TWO CAPSULES METHOD 10-3

CAPINTEC, INC. CAPTUS® 600

100 dt: 4%
5683. cpm

ABORT REFERENCE 400 keV

Figure 10-4

If the system does not find a peak at the expected energy, the following message will appear:

MEASUREMENT ERROR

Press Any Key to Continue

Check to make sure that the correct capsule(s) are in the Probe, or if any background activity
could be causing interference, and press any key to perform the measurement again.
When the counting period is over, the area below the curve is shaded, and the screen
displays total counts as shown in Figure 10-5.

100
5683. cpm
OK?
(Y OR N)

REFERENCE 400 keV

Figure 10-5

If this measurement is not OK, press the N key to answer “NO”, and press ENTER. The
screen returns to the Capsule Measurement Screen (Figure 10-3) to begin this measurement
again.

If this measurement is OK, press the Y key to answer “YES”, and press ENTER. If the
protocol calls for more than one repetition of this measurement, the Capsule Measurement

10-4 THYROID UPTAKE: TWO CAPSULES METHOD November 07

CAPINTEC, INC. CAPTUS® 600

Screen (Figure 10-3) will re-appear, with the last line indicating the next repetition (ex.
Counting Repetition # 2 / 2). The prompt will not appear.

After the last repetition, the screen changes to the Measure Background Screen (Figure 10-
6).

THYROID UPTAKE 14:32

KETCHUM, LIN
PROTOCOL: PROT 1

MEASURE
ROOM BACKGROUND

EXIT START
Figure 10-6

Remove the capsules from the Probe, and press the F4 [START] key.

Note: The capsule(s) should be located far away from the Probe so that they will not
contribute to the background activity measurement.

The Counting Screen for Room Background (Figure 10-7) will appear and the system
immediately begins counting background activity.

100 dt:
5683. cpm

ABORT BACKGROUND 400 keV
Figure 10-7

When the background count is finished, the Background Verification Screen (Figure 10-8) will
appear.

November 07 THYROID UPTAKE: TWO CAPSULES METHOD 10-5

CAPINTEC, INC. CAPTUS® 600

100
5683. cpm
OK?
(Y OR N)

BACKGROUND 400 keV

Figure 10-8

If the total count, displayed in the upper left corner is not OK, press the N key to answer “NO”
and press ENTER. The Measure Background Screen (Figure 10-6) will re-appear allowing
the background measurement to be repeated.
If the total count is OK, press the Y key to answer “YES” and press ENTER.

UPTAKE MEASUREMENT

When it is time to perform the uptake, select the patient from the patient list and measure the
neck and thigh according to the directions in CHAPTER 8: THYROID UPTAKE: GENERAL
INSTRUCTIONS.

10-6 THYROID UPTAKE: TWO CAPSULES METHOD November 07

CAPINTEC, INC. CAPTUS® 600

VIEWING RESULTS

After the neck and thigh have been measured, the Results Screen (Figure 10-9) will appear.

DOSE (D) : 200.0 μ Ci

NECK (N) : 3647 cpm
THIGH (B) : 2107 cpm

THYROID (T: N-B) : 1540 cpm

CAPSULE (C) : 4650 cpm

NUMBER CAPS (K) : 1

UPTAKE (T/KC) : 33.1%

ENTER INITIALS:

Figure 10-9

Input your initials and press ENTER. The Graphics Screen (Figure 10-10) will appear.

DASILVA, AND

% 50 ...............*.............................
U 40 ..................................*..........
P
T 30
A 20 ............................................
K ............................................

E 10 ............................................

2 24 hours

AGAIN DONE P

Figure 10-10

Press PRINT [P] to print a report of this Thyroid Uptake study. Refer to Figure 10-11 for an
example of the printout.

Press F1 [AGAIN] if an error was made in the measurement and the measurement needs to
be repeated.

Press F4 [DONE] to exit the screen and return to the Patient Selection Screen.

Note: Refer to CHAPTER 8: THYROID UPTAKE: GENERAL INSTRUCTIONS for a more
detailed discussion of this display.

November 07 THYROID UPTAKE: TWO CAPSULES METHOD 10-7

CAPINTEC, INC. CAPTUS® 600

Figure 10-11

10-8 THYROID UPTAKE: TWO CAPSULES METHOD November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 11

THYROID UPTAKE: STANDARD
CAPSULE METHOD

GENERAL PROCEDURE

The general procedure for performing a TU study via the Standard Capsule Method is:
• Enter TU Standard Data
• Measure TU Standard once a day
• Enter Patient Demographics
• Choose Standard Capsule Protocol
• Choose Standard
• Perform Pre-Dose Measurement (if it is in protocol)
• Enter Capsule Administration Data
• Perform the uptakes at the indicated times

ACCESSING TU STANDARD

To access TU Standard data and/or measure a TU Standard, press F2 [STAND] from the
Probe Screen (Figure 11-1).

PROBE 14:32

F1 F2 F3 F4
T/U STAND BIO

Figure 11-1

The Standard List Screen (Figure 11-2 and Figure 11-3) will appear.

November 07 THYROID UPTAKE: STANDARD CAPSULE METHOD 11-1

CAPINTEC, INC. CAPTUS® 600
TU STANDARD 14:32
TU STANDARD 14:32
STANDARD 1 I 131

ADD ADD EDIT DEL MEAS P
Figure 11-3
Figure 11-2

The CAPTUS® 600 can store data for up to three TU Standards. If no Standards have been
entered, only “ADD” will be displayed and the Standards List will be blank.

If the maximum number of TU Standards has been entered, the “ADD” key will be blank.

ADDING A TU STANDARD

Press F1 [ADD]. Figure 11-4 will appear.
TU STANDARD 14:32

NUCLIDE: I 131
COUNTING REPETITIONS: 2

NUCLD REPS OK
Figure 11-4

Press the F1 [NUCLD] key to select the correct nuclide for this Standard. The F1 key will
cycle the “NUCLIDE” from “I131” to “I123” to “Tc99m”.

Press F3 [REPS] to select the number of repetitions (“1” or “2”) for measuring the Standard.

When the correct nuclide and counting repetitions are displayed on the screen, press the F4
[OK] key. Figure 11-5 will appear.

11-2 THYROID UPTAKE: STANDARD CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

TU STANDARD 14:32

COUNTING PERIOD: >120 SEC

STANDARD ID :

CALIB ACTIVITY : μCi

CALIB DATE :JAN 30, 1994
CALIB TIME :12:34

NUM OK

Figure 11-5

Input the desired Counting Period. The default of 120 seconds is displayed. The minimum
value is 10 seconds and the maximum value is 999 seconds.

For “STANDARD ID:”, input a name up to 10 characters.

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.

Input the calibration activity.
Input the calibration date according to the chosen Date Entry Format.

Input the calibration time in 24 hour format.

Press F4 [OK] when all entries are correct.
The Standard List Screen (Figure 11-2 and Figure 11-3) will re-appear showing the new TU
Standard added to the list.

EDITING A TU STANDARD

When the Standard List Screen appears, move the prompt to the TU Standard to be edited
and press F2 [EDIT].

DELETING A TU STANDARD

When the Standard List Screen appears, move the prompt to the TU Standard to be deleted
and press F3 [DEL].

November 07 THYROID UPTAKE: STANDARD CAPSULE METHOD 11-3

CAPINTEC, INC. CAPTUS® 600

This question, with the appropriate Standard Name in the second line, will appear on the
screen:

DO YOU WANT TO DELETE
STANDARD NAME

Y OR N

If a TU Standard is being used in a TU study, then it cannot be deleted. If an attempt is made
to delete a Standard that is in use, the following message is displayed:

STANDARD IS BEING USED
CANNOT DELETE

Before deleting the Standard, the patients’ studies must be completed and the patients
deleted.

PRINTING TU STANDARD DATA

Press PRINT [P] on the Standard List Screen to obtain a printout of the TU Standard data
that has been entered.

MEASURING TU STANDARD

The TU Standard must be measured once a day (before it can be used in a patient study).

When the Standard List Screen (Figure 11-3) appears, move the prompt to the TU Standard
to be measured and press F4 [MEAS]. The Standard Measurement Screen (Figure 11-6) will
appear.

TU STANDARD 14:32

ID: EE
MEASURE I 131

STANDARD IN

AT:>25.0 CM

Counting Repetition #1 / 2

START

Figure 11-6

The default distance of 25 cm is displayed.

11-4 THYROID UPTAKE: STANDARD CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

Input the distance that will be used for the TU studies. The distance entered here cannot be
changed when a patient is being measured.

When the distance is correct, place the capsule in the phantom and press F4 [START]. The
Standard Count Screen (Figure 11-7) will appear.

200
19.56kcpm
OK?
(Y OR N)

ABORT STANDARD 400 keV

Figure 11-7

If the measurement is acceptable, press Y and ENTER. Otherwise, press N and ENTER and
the unit will count again.
The unit will then prompt you to measure room background. Remove all sources and press
the F4 [START] key. Accept or reject the room background with a Y or N.
The Standard Measurement Results Screen (Figure 11-8) will appear.

TU STANDARD 14:32

STANDARD : 1504 cpm
CONV FACTOR : 15.04 cpm/ μ Ci

OK? (Y OR N)

Figure 11-8

Respond Y for “YES” and N for “NO”.
If the measurement is not accepted, the TU Standard Measurement process will begin again
from Standard Measurement Screen (Figure 11-6).

November 07 THYROID UPTAKE: STANDARD CAPSULE METHOD 11-5

CAPINTEC, INC. CAPTUS® 600

If the measurement is accepted, the TU Standard Done Screen (Figure 11-9) will appear.

TU STANDARD 14:32

I 131 STANDARD
ID :
AT: 25.0 CM

DONE P
Figure 11-9

Press PRINT [P] to print a report of the Standard Measurement results.
Press F4 [DONE] to exit the screen.

SELECTING STANDARD FOR TU STUDY

After a Standard Capsule protocol has been chosen, the Standard must be chosen and/or
verified.

If no Standard data has been entered, an error message will appear.

If one or more Standards have been entered, the Standard Selection Screen (Figure 11-10)
will appear listing the Standard’s ID and nuclide.

THYROID UPTAKE 14:32

SELECT STANDARD

>STAND 1 I 131
STAND 2 I 123

Figure 11-10

11-6 THYROID UPTAKE: STANDARD CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

Select the desired Standard by moving the cursor next to the name of the Standard and
press the ENTER key.

If the Standard nuclide is not the same as the protocol nuclide, an error message will appear
and you will be able to select again.

The Data Screen for the Standard (Figure 11-11) will appear.

THYROID UPTAKE 14:32

STANDARD DATA

STAND 1 I 131

CALIBRATED: MAR 11, 1992 15:02

: 100 μCi
CURRENT: 90 μCi

OK? (Y OR N)

Figure 11-11
If the data is OK, press Y. Otherwise, press N and select another Standard.

PRE-DOSE MEASUREMENT

If the protocol indicates that a Pre-Dose Measurement is to be performed, the measurements
must be made after the protocol and Standard are chosen and before the “administered”
data is entered. There is only one chance to measure Pre-Dose. If “SKIP” is chosen, there
will not be another chance to measure Pre-Dose.

Reference CHAPTER 8: THYROID UPTAKE: GENERAL INSTRUCTIONS for performing
Pre-Dose Measurement.

If BSP is pressed from the Pre-Dose Measurement Screen, the TU Patient Selection Screen
will re-appear.

ENTERING ADMINISTERED DOSE

The Administered Data Screen (Figure 11-12) will appear. (If you do not yet know the
administered data, press BSP or HOME when this screen appears).

November 07 THYROID UPTAKE: STANDARD CAPSULE METHOD 11-7

CAPINTEC, INC. CAPTUS® 600

NAME, PAT
PROTOCOL: STAND

A D M IN IS T E R E D

RX ID :> μCi I 131
DOSE :

ON : MAR 12, 1992

AT :11:47

NO. CAPS: 1 IN DOSE

LET OK

Figure 11-12

At the “RX ID” prompt, input the name or identification number of the capsule to be
administered to this patient. The “RX ID” can consist of up to 19 numbers and/or letters.

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.

Enter the total dose in µCi and the number of capsules administered. The dose is used in the
calculation but the number of capsules is entered for reference only.

Input the time and date of administration if it is different from the default of “now”.

Press the F4 [OK] key when all the data is correct. Figure 11-13 will appear.

NAME, PAT
PROTOCOL: STAND

A D M IN IS T E R E D

RX ID : I1234
DOSE : 100 μCi I 131

ON : MAR 12, 1992

AT :11:47

NO. CAPS: 1 FOR REFERENCE

DONE MEAS

Figure 11-13

Press F3 [DONE] if a measurement is not desired at this time.
Press F4 [MEAS] to perform the measurement.

11-8 THYROID UPTAKE: STANDARD CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

If the Standard has not been measured “today”, the Standard Measurement procedure will
be performed and then the uptake procedure will be entered. Press HOME when the
Measure Neck Screen appears if it is not time for an uptake.

If the Standard has been measured “today”, the TU uptake measurement procedure will be
entered.

UPTAKE MEASUREMENT

When it is time to perform the uptake, select the patient from the patient list.

If the selected Standard has not been measured for the current calendar day, or if the
distance has been changed, the TU Standard measurement procedure will be performed.

When the Standard has been measured with the same distance, measure the neck and thigh
according to the directions in CHAPTER 8: THYROID UPTAKE: GENERAL
INSTRUCTIONS.

VIEWING RESULTS

After the neck and thigh have been measured, the Results Screen (Figure 11-14) will appear.

DOSE (A) : 1.0 μCi

NECK (N) : 3148 cpm

THIGH (B) : 1902 cpm

THYROID (T:N-B) : 1246 cpm

DECAY FACTOR (D) : 0.998 cpm
STANDARD (S) : 4328 cpm/μCi

UPTAKE (T/DAS) : 28.8%

ENTER INITIALS:

Figure 11-14

Input your initials and press ENTER. The Graphics Screen (Figure 11-15) will appear.

November 07 THYROID UPTAKE: STANDARD CAPSULE METHOD 11-9

CAPINTEC, INC. CAPTUS® 600

DASILVA, AND

% 50 ...............*.............................
U 40 ..................................*..........
P
T 30
A 20 ............................................
K ............................................

E 10 ............................................

2 24 hours

AGAIN DONE P

Figure 11-15

Press PRINT [P] to print a report of this TU study. Refer to Figure 11-16 for an example of
the printout.

Press F1 [AGAIN] if an error was made in the measurement and the measurement needs to
be repeated.

Press F4 [DONE] to exit the screen and return to the Patient Selection Screen.

Note: Refer to CHAPTER 8: THYROID UPTAKE: GENERAL INSTRUCTIONS for a more
detailed discussion of this display.

11-10 THYROID UPTAKE: STANDARD CAPSULE METHOD November 07

CAPINTEC, INC. CAPTUS® 600

November 07 Figure 11-16 11-11

THYROID UPTAKE: STANDARD CAPSULE METHOD



CAPINTEC, INC. CAPTUS® 600

CHAPTER 12

WIPE TEST SETUP

INTRODUCTION

Several items must be set up in order to do Wipe Testing.

To access the Wipe Setup, press the HOME key and then the UTIL key. The main Utilities
menu (Figure 12-1) will appear.

UTILITIES 14:32

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

0. RETURN TO PROBE SCREEN

Figure 12-1

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

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
12-2) will appear.

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. OTHER

0. RETURN TO UTILITIES MENU

Figure 12-2

November 07 WIPE TEST SETUP 12-1

CAPINTEC, INC. CAPTUS® 600

Press 7 to select WIPE AND MCA SETUP. The Wipe and MCA Setup menu (Figure 12-3)
will appear.

WIPE AND MCA SETUP 14:32

1. WIPE DESCRIPTIONS
2. USER KEY ASSIGNMENTS
3. ADDITIONAL NUCLIDES
4. GENERIC CONVERSION FACTORS
5. TRIGGER LEVEL/COUNT TIME
6. MCA SETUP

Figure 12-3

WIPE DESCRIPTIONS

To make reports and printouts of Wipe Test measurements you must tell the
CAPTUS® 600 where the wipes were taken. Wipes can be from one of 4 different areas.
These are:

• Work areas

• Unrestricted areas

• Receiving

• Sealed Sources

Entering Data for a Wipe Location

From the Wipe and MCA Setup Menu, press 1 to select WIPE DESCRIPTIONS. The Wipe
Descriptions Screen (Figure 12-4) will appear.

WIPE DESCRIPTIONS 14:32

1. WORK AREAS
2. UNRESTRICTED AREAS
3. RECEIVING
4. SEALED SOURCES
5. PRINT ALL

0. RETURN TO WIPE SETUP MENU

Figure 12-4

12-2 WIPE TEST SETUP November 07

CAPINTEC, INC. CAPTUS® 600

Determine which wipe area the location fits into. Examples of locations and areas are:

WORK AREA: Hot Lab, Sink
UNRESTRICTED AREA: Patient Lavatory
RECEIVING: Incoming Packages
SEALED SOURCES: Co60 Reference Source

Depending upon which area has been selected, a screen similar to Figure 12-5 will appear.

W ORK AREAS 13:06

W -01 HOT LAB SINK
W-02 HOT LAB KNOB

ADD EDIT DEL DONE P
Figure 12-5

If no locations have been added to memory, only the F1 [ADD] key and the F4 [DONE] key
will be active.

Adding a Location
Press the F1 [ADD] key. Figure 12-6 will appear.

W ORK AREAS 13:06

ID# :> 04
ROOM :
D ESCRI P T I ON

NUM OK
Figure 12-6

November 07 WIPE TEST SETUP 12-3

CAPINTEC, INC. CAPTUS® 600

Input the “ROOM” and “DESCRIPTION” using letters and/or numbers.

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.

The “ID#” may be changed if so desired. An error message will appear if the ID# is already in
use for this area.

The ID# assigned to this wipe will consist of the first letter of the area description and the
wipe number.

W-XX....... for Work Areas
U-XX........ for Unrestricted Areas
R-XX........ for Receiving Areas
S-XX ....... for Sealed Sources

There is a limit of 99 wipe assignments for each area. There may be a maximum of 150 wipe
assignments in the CAPTUS® 600 memory at any time in any combination of areas.

When the data in Figure 12-6 is correct, press the F4 [OK] key, and Figure 12-5 will re-
appear with the added wipe location shown.

After adding all wipe locations, and after having returned to Figure 12-5, press the F4
[DONE] key and the Wipe Descriptions Screen (Figure 12-4) will re-appear. Pressing 0 will
return the system to the Wipe and MCA Setup menu (Figure 12-3).

Editing or Deleting a Location

Press the appropriate keys (F2 [EDIT] and F3 [DEL]) as shown on Figure 12-5. The system
will prompt for the necessary information.

TRIGGER LEVEL/COUNT TIME

Other parameters that must be set up to perform Wipe Tests are the Trigger Levels and
Count Times.

Trigger Levels are selected for each of the Wipe Areas. If a peak is determined to have a
Count Rate greater than the Trigger Level for the Wipe’s area, it is identified as “HIGH” in the
Wipe Test Report.

Count Times are also selectable for each area. Longer Count Times are recommended for
low activity counting to improve counting statistics.

To set up Trigger Levels and Count Times, from the Wipe and MCA Setup menu, press 5 to
select TRIGGER LEVEL/COUNT TIME. Figure 12-7 will appear.

12-4 WIPE TEST SETUP November 07

CAPINTEC, INC. CAPTUS® 600

TRIGGER LEVEL/ 14:32
COUNT TIME

1. BACKGROUND

2. WORK AREAS
3. UNRESTRICTED AREAS

4. RECEIVING
5. SEALED SOURCES
6. GENERAL
7. PRINT ALL

0. RETURN TO WIPE SETUP MENU

Figure 12-7

If BACKGROUND is selected, the trigger level is in cpm (cps if in Becquerel mode). If
counting rate is greater than the trigger level during a background measurement, the
message “BACKGROUND HIGH” will appear.

If WORK AREAS or UNRESTRICTED AREAS is selected, the trigger level is in dpm (Bq if in
Becquerel mode).

If RECEIVING or SEALED SOURCES is selected, the trigger level is in nCi (Bq if in
Becquerel mode).

The GENERAL category is for wipes in an area with no description. Only counting time is
entered; there is no trigger level for this category.

Select the appropriate area by pressing the number key that corresponds to that area. A
screen similar to Figure 12-8 will appear. (The Work Areas category is given as an example)

WORK AREAS 13:06

TRIGGER LEVEL: >2000 dpm
COUNTING TIME: 60 SEC

OK
Figure 12-8

Any peak found by the wipe test will be labeled “HIGH” if the Count Rate associated with the
Region of Interest of the peak is greater than the trigger level. Notice that the trigger level is

November 07 WIPE TEST SETUP 12-5

CAPINTEC, INC. CAPTUS® 600

in dpm, not cpm. This means only peaks for which a Conversion Factor (CF) is entered in
memory will be compared to this trigger level.

Counting Time determines how long the CAPTUS® 600 will count during a Wipe Test.

Input the desired Trigger Level and Counting Time.

Press F4 [OK] when the data is correct. This will store the data for this area in memory. The
Trigger Level / Count Time Area Select Screen (Figure 12-7) will re-appear.

When finished setting the Trigger Levels, press 0 to return to the Wipe and MCA Setup menu
(Figure 12-3).

GENERIC CONVERSION FACTORS

Generic Conversion Factors is the next item that should be set up. Generic CF is used as a
general-purpose measure of activity. It does not correspond to any particular isotope. For this
reason, it should only be used as a check and not as a measure of activity of any particular
isotope.

The Generic CF is multiplied by the cpm measured for a Region of Interest consisting of all
256 channels of the CAPTUS® 600 Pulse Height Analyzer (PHA) after a wipe is measured.
Since Wipe Tests are only performed on the 400 and 1600 keV full-scale range, it is
necessary to set up CFs for these ranges only. A CF should be chosen so that for a wipe that
is equivalent to background, the results for the generic CF don't exceed the Trigger Levels
set up in the previous section.

To set up Generic Conversion Factors, from the Wipe and MCA Setup menu, press 4 to
select GENERIC CONVERSION FACTORS. Figure 12-9 will appear.

GENERIC CONVERSION 13:06

400 keV CONVERSION FACTOR :>2.0
1600 keV CONVERSION FACTOR : 2.0

DONE OK P
Figure 12-9

If Generic Conversion Factors have never been entered, the default values of 2.0 will be
displayed. Otherwise, the last entered values will be displayed.

12-6 WIPE TEST SETUP November 07

CAPINTEC, INC. CAPTUS® 600

Input new values if so desired.
Press F4 [OK] to store the data.
Press PRINT [P] to print a report of the Generic Conversion Factors.
Press F1 [DONE] to exit and return to the Wipe and MCA Setup menu (Figure 12-3).

ADDITIONAL NUCLIDES

A list of all nuclides whose data is built into the CAPTUS® 600 may be obtained via
Diagnostics.

If you will be working with nuclides that are not on this list, data for up to 10 nuclides may be
added.

To set up additional nuclides, from the Wipe and MCA Setup menu, press 3 to select
ADDITIONAL NUCLIDES. Figure 12-10 will appear.

ADDITIONAL NUCLIDES 13:06

NUCLIDE NAME: >

DONE OK
Figure 12-10

Type the one or two letter symbol for the nuclide. If this nuclide has just one letter, be sure to
press the SP (Space) key after the first letter. Then type the two or three numbers that
indicate the atomic number for this nuclide.

Note: Use the * key to add the m for Metastable, if applicable.

When the nuclide name is correct, press F4 [OK].

In the example below (Figure 12-11), Fe55 is entered for the nuclide name.

November 07 WIPE TEST SETUP 12-7

CAPINTEC, INC. CAPTUS® 600

ADDITIONAL NUCLIDES 13:06

NUCLIDE NAME: FE55

HALF LIFE : M
ENERGY : keV

UNIT OK
Figure 12-11

Press F1 [UNIT] to change the half-life unit from Minutes to Hours to Days to Years.

Input the half-life of the nuclide and the energy of the main photopeak of the nuclide.

When the data is correct press the F4 [OK] key. The data will be stored in memory and
Figure 12-10 will re-appear.

If all additional nuclides have been entered, press F1 [DONE].

Up to ten additional nuclides may be stored in the CAPTUS® 600 memory. If the additional
nuclides memory is full and the user attempts to add another nuclide, the system will allow
the user to replace one of the entries or abort the operation. Additional nuclides may have
Conversion Factors assigned to them and be assigned to USER keys.

12-8 WIPE TEST SETUP November 07

CAPINTEC, INC. CAPTUS® 600

USER KEY ASSIGNMENT

USER keys are active in the graphic display for Wipe Test and MCA. If a USER Key has a
nuclide assigned to it, it works the same as a Pre-Set Nuclide key (e.g. Tc99m key).

To set up USER keys, from the Wipe and MCA Setup menu, press 2 to select USER KEY
ASSIGNMENT. Figure 12-12 will appear.

13:06

ASSIGN NUCLIDE TO USER KEY #1

UKEY DONE OK
Figure 12-12

Press the F1 [UKEY] key to toggle between the various USER keys. When the proper USER
key is shown, press the F4 [OK] key. Figure 12-13 will appear showing the current
assignment of the selected USER key. “NONE” will be displayed if no assignment has been
made. In the example below, Co58 has been assigned to USER key #1.

13:06

USER KEY #1 ASSIGNED TO CO58

CHANGE ASSIGNMENT? (Y OR N)

Figure 12-13

If the assignment is correct, press N. Figure 12-12 will re-appear.
To change the assignment, press Y. Figure 12-14 will appear.

November 07 WIPE TEST SETUP 12-9

CAPINTEC, INC. CAPTUS® 600

13:06
ASSIGN NUCLIDE TO USER KEY #1

NUCLIDE NAME:>

DONE OK

Figure 12-14
Input the nuclide name.
Press F4 [OK] to accept the name.
Press F1 [DONE] to keep the previous assignment.

12-10 WIPE TEST SETUP November 07

CAPINTEC, INC. CAPTUS® 600

CHAPTER 13

WIPE TEST

INTRODUCTION

Before performing Wipe Tests, the Calibration Test must have been performed for the
calendar day. Reference CHAPTER 6: ACCEPTANCE & QUALITY ASSURANCE TESTS for
instructions on performing the Calibration Test.

The room background must be measured in the Well for the 400 keV and 1600 keV scales
once a day.

If you are performing a Well Function (e.g. a lab test), press HOME. Figure 13-1 will appear.

If you are performing a Probe Function (e.g. Thyroid Uptake), press HOME and then press
WELL. Figure 13-1 will appear.

WELL 13:06

F1 F2 F3 F4
WIPE LAB

Figure 13-1

If your system is configured for just one detector and you press the WELL key, the system
will automatically use the detector connected to the PROBE INPUT on the back panel.

Press the F1 [WIPE] key.

MEASURING BACKGROUND

If the Calibration Test has not been performed in the current calendar day, a message
instructing the user to perform Test will appear on the display. Figure 13-2 will appear
instructing you to perform background. If background has already been measured in the
current calendar day, the Wipe Test Area Select Screen (Figure 13-5) will appear.

November 07 WIPE TEST 13-1

CAPINTEC, INC. CAPTUS® 600

MEASURE BACKGROUND 14:43

MAKE SURE NO SOURCES ARE NEARBY

AFTER MEASUREMENT--
PRESS SAVE OR PRINT TO ACCEPT

STAR
Figure 13-2

If you need to measure background, remove all sources from well (or drilled crystal) and
make sure no sources are nearby. Press the F4 [START] key.

The CAPTUS® 600 will proceed to count the background for the counting time selected in
Background Count Time setup. During the count time, the live spectrum will be displayed.
The CAPTUS® 600 will first count on the 400 keV scale and then on the 1600 keV scale. At
any time, you may abort the counting by pressing the F2 [ABORT] key.

When the background measurement is complete, Figure 13-3 will appear as long as the
counting rate has not exceeded the limits set in Background Trigger Level setup. If the
counting rate limits have been exceeded, Figure 13-4 will appear. This indicates that the
background is too high. Check for sources near the detector or contamination on the detector
and count again. If you are sure there are no sources nearby and the detector is not
contaminated, you may have to raise the background trigger level. The ROI used for
Background in comparing against the selected trigger level is the entire spectrum (all 256
channels).

500 Cts FS 1024 keV

BACKGROUND TOO HIGH

BACKGROUND: 25.69 kcpm
TRIGGER LEVEL: 9999 cpm

COUNT RANGE SAVE EXIT 5 1600 keV P Press Any Key to Continue
Figure 13-4
Figure 13-3

13-2 WIPE TEST November 07

CAPINTEC, INC. CAPTUS® 600

The Function keys shown in Figure 13-3 operate as follows:

• F1 [COUNT] Repeats the measurement without saving the background.

• F2 [RANGE] Toggles the display between the spectra of the 1600 keV full scale
range and the 400 keV full scale range.

• F3 [SAVE] Saves both spectra to memory

• F4 [EXIT] Exits background. (Background will not be saved if F3 [SAVE] has
not been pressed)

• PRINT [P] Prints both spectra and prints background counting rate.

For this screen, the Pre-Set Nuclide and USER keys are active. See later sections in this
chapter for the functions of these keys.

MEASURING A WIPE

If the background is saved, the Wipe Test Area Select Screen (Figure 13-5) will appear.

W IPE TEST 14:32

1. BACKGROUND
2. WORK AREAS
3. UNRESTRICTED AREAS
4. RECEIVING
5. SEALED SOURCES
6. GENERAL

Figure 13-5

Select the area from which this wipe was taken by pressing the appropriate number key. You
may re-measure background at any time by choosing number 1.

The General Category (6) is for wipes that are not from a location entered in Wipe
Descriptions. Therefore, Figure 13-6 and Figure 13-7 will be skipped.

After selecting an area, either a list of locations for the selected area will appear (Figure 13-
6) or, if there are no locations assigned to the selected area, an error message will appear
(Figure 13-7).

November 07 WIPE TEST 13-3

CAPINTEC, INC. CAPTUS® 600

WORK AREAS 13:06 RECEIVING 12:50
W-01 HOT LAB SINK
W-02 HOT LAB DOOR KNOB
W-03 CAMERA TABLE

NO WIPES IN THAT CATEGORY

SELCT DONE P Press Any Key to Continue
Figure 13-7
Figure 13-6

Press the PRINT [P] key to obtain a printed summary of the wipes for the selected area.
After the report is printed, you will be asked if you want to delete all the wipe data for that
area. Press Y (YES) to delete the data; press N (NO) to retain the data.

Note: Data should be deleted periodically to free up memory.

Move the prompt in Figure 13-6 to the line showing the proper location and press the F1
[SELCT] key. A screen similar to Figure 13-8 will appear.

13:06

INSERT W IPE
W -01 HOT LAB SINK

START

Figure 13-8

Place the Wipe in the detector and press the F4 [START] key. The CAPTUS® 600 will begin
counting on the 400 keV scale. The CAPTUS® 600 will count for the time selected in Count
Time Setup. The live spectrum will be shown on the display.

If the CAPTUS® 600 detects a significant number of counts in the highest PHA channel, it will
automatically assume there may be activity at an energy which is not measurable on this
range and begin counting on the 1600 keV range.

13-4 WIPE TEST November 07

CAPINTEC, INC. CAPTUS® 600

Significant counts is defined as greater than one square root of the total counts detected in
the overflow channel of the stored background count.

WIPE RESULTS

The Wipe Results Activity Screen (Figure 13-9) will appear.

DE

F
G

C W-01 HOT LAB SINK H
Trig Level: 2000

CF: 1600 87.75 +1.05 kdpm HIGH

CS137 193.5 + 4.2 kdpm HIGH
B

200 keV 5086. + 179. cpm

A 326 keV 4257. + 164. cpm
376 keV 3953. + 158. cpm

COUNT GRAPH NEXT P

Figure 13-9

A. Peaks detected for which no CF is in memory
B. Peaks detected for which a CF is stored in memory
C. Indicates that results for the Generic CF is for 1600 keV scale. If only the 400 keV

scale was measured, 400 would be displayed and the CF for the 400 keV scale would
be used.
D. Wipe ID
E. Wipe Location
F. Trigger Level for this area (none for General Wipe)
G. Results of Generic CF
H. Indicates results exceeded Trigger Level

Note: If the CAPTUS® 600 finds more peaks than can fit on one screen it will display the
word “MORE” in the lower left hand corner of the screen. To see the remaining peaks
use the ARROW key to scroll the display to the next screen on the list.

The function keys of the Wipe Results Activity Screen (Figure 13-9) operate as follows:
• F1 [COUNT] Re-counts the wipe.

November 07 WIPE TEST 13-5

CAPINTEC, INC. CAPTUS® 600

• F3 [GRAPH] Switches to the spectrum graph display, which allows detailed
• F4 [NEXT] observation of the spectra taken on the 400 or 1600keV range.
• PRINT [P] Reference Figure 13-10.

Stores the data for this measurement in memory and proceeds to
Figure 13-6 for the next wipe location. This key is blank and
inactive for General Wipes.

Saves the results to memory, and prints the wipe report. If viewing
the graphs when print is pressed, the spectra will print as well.

WIPE GRAPHICS SCREEN 1024 keV

A

500 Cts FS

COUNT RANGE ACT NEXT 1600 keV P B
C

Figure 13-10

A. Cursor Position
B. Cursor
C. Indicates Range

The function keys of the Graph Screen (Figure 13-10), operate as follows:

• F1 [COUNT] Re-counts the wipe.

• F2 [RANGE] Switches between 400 keV and 1600 keV ranges. If the CAPTUS®
600 did not count in the 1600 keV range, this key will not be active
and the key will be blank.

• F3 [ACT] Switches back to the Activity Screen (Fig. 13-9).

• F4 [NEXT] Stores the data for this measurement in memory and proceeds to
Figure 13-6 for the next wipe location. This key is blank and
inactive for General Wipes.

13-6 WIPE TEST November 07

CAPINTEC, INC. CAPTUS® 600

Scale/Cursor Mode
At any time when viewing the Wipe Screen, the system is either in Scale Mode or Cursor
Mode. The S key toggles between these two modes.

The default is Cursor Mode. This means the number to the right of the F4 key determines
how many channels the cursor will jump with each press of the ARROW keys.

In Scale Mode, the ARROW keys increase or decrease the vertical scale. This feature is
useful to magnify an area of the display. The vertical scale will not display less than 100
counts full scale.

To identify if the mode is Scale or Cursor, the word “SCALE” appears on the left of the
screen only when in Scale Mode.

Note: The PRINT [P] key is only active in Cursor Mode.

Activity of a Nuclide
The activity in a Region of Interest corresponding to a given nuclide can be obtained by
pressing one of the Pre-Set Nuclide keys (Cr51, Co57, Ga67, Tc99m, In111, I131, I123,
I125, Tl201), a USER key which has had a nuclide assigned to it or the NUCL key. After the
NUCL key is pressed, input the name of the nuclide and press ENTER.

The activity is displayed on the top line.

If no Conversion Factor has been entered for that nuclide, the counting rate cpm (or cps) is
displayed.

If there is a Conversion Factor, dpm or nCi (or Bq) is displayed. If the activity is greater than
the trigger level, “HIGH” is displayed. (except in General Wipe, which has no Trigger Level).

Activity for Generic Conversion Factor
The activity of the entire spectrum calculated using the Generic Conversion Factor for the
chosen range (400 keV or 1600 keV) can be obtained by pressing the CF key.

The activity is displayed on the top line in dpm.

WIPE REPORT

A sample Wipe Report Printout is shown in Figure 13-11. To print out all wipe results in
memory for a particular area, press the PRINT [P] key in the screen of Figure 13-6.

November 07 WIPE TEST 13-7

CAPINTEC, INC. CAPTUS® 600

Figure 13-11

13-8 WIPE TEST November 07