Detector Calibration
4-16
CardioMD Service Manual
1MAN0158-H11 04-2005 CSIP Level 1
Procedure Details
16.
Place the point source holder at a mini-
mum distance of approximately 1.85 me-
ters (6 ft.) from the detector to be cali-
brated.
17.
Place a Tc-99m point source of approxi-
mately 40 MBq or 1 mCi in the holder.
18.
Make sure that the entire detector FOV is
exposed to the source and that the count
rate is < 40 kcps.
1
2
75
+
/-
3 c
m
185 +/- 3 cm
1
2
75
+
/- 2 c
m
185 +/- 3 cm
Note
. The detector to be calibrated must
not
have a collimator mounted.
19.
Click Start to acquire the window 1 spec-
trum.
When the message box with the text Itera-
tion 1 appears:
Note
. Do
not
click OK until the source has
been replaced.
20.
Remove the Tc-99m source and place the
other source (Tl-201, Ga-67, Ba-133 or
Am-241) in the source holder.
21.
Now click OK.
When the message box with the text Itera-
tion 2 appears:
22.
Click OK to acquire the window 3 spec-
trum (if the field Window 3 was not left
blank).
When all energy spectra have been acquired,
the procedure is completed and this message
appears.
23.
Click OK to close the message.
Typical energy coefficients are:
•
Parameter C0: – 0 +/– 20
•
Parameter C1: – 1 +/– 0.3
•
Parameter C2: – 0 +/– 0.002
Note
. These values apply, regardless of the
isotope used.
24.
Repeat the procedure to calibrate the other
detector, or
25.
Click Exit to close the ECal page.
Summary of Contents for CARDIOMD
Page 1: ...CARDIOMD SERVICE MANUAL 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 10: ...Introduction x CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 16: ...Safe Operating Practices 1 6 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 164: ...Detector Calibration Files 5 60 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 328: ...Installation Procedures 9 38 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 348: ...Planned Maintenance Procedures 11 6 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Page 465: ......