NEMA Uniformity
10-8
CardioMD Service Manual
1MAN0158-H11 04-2005 CSIP Level 1
Procedure Details
6.
Replace the collimator on the selected
detector with the FOV Mask –
not
the
NEMA mask (slide the collimator out and
slide in the mask).
Note
. Be sure to use the FOV mask for this test,
not
the NEMA mask.
Procedure Details
7.
Remove the collimator from the detector
not
in use to avoid the “U.diff.140.1 not
found” error message
8.
Place the point source holder at a mini-
mum distance of 2 meters (6 ft.) from the
detector.
9.
Place a ~ 200–500
µ
Ci (7–20 MBq) Tc-
99m point source yielding 20 kcps or less
in the holder.
Note
. Make sure that the position of the source is exactly in front of the center of the detector
FOV. It is very important that the entire detector FOV is
uniformly
exposed to the source.
Procedure Details
10.
Make sure that the entire detector FOV is
exposed to the source and that the count
rate is < 20 kcps.
11.
Click Start.
When the test is complete, the result is shown
in a pop-up window.
12.
Note the result. Click OK to remove the
pop-up.
Uniformity specifications are:
UFOV differential
≤
1.5%
CFOV differential
≤
1.5%
UFOV integral
≤
2.5%
CFOV integral
≤
2.5%.
1.01%
13.
Replace the FOV Mask with the collima-
tor.
14.
Click Exit to return to the NEMA menu.
Note
. To measure the other detector, place the CardioMD system in the patient load position be-
fore repeating the procedure outlined above.
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: ......