Nema Uniformity; Test Requirements; Test Procedure - Philips CARDIOMD Service Manual

10.3 NEMA Uniformity

10.3.1 Test Requirements

Detector:
Source:
Source holder:
Mask:
Total test time:

10.3.2 Test Procedure

Note. If the CardioMD system is equipped with the AC Option, the transmission scanners must be
removed before the NEMA Uniformity test can be performed. See Chapter 12 CardioMD AC
Option for instructions.
Procedure
1. In the NEMA menu, select Uniformity.
The Uniformity page appears.
2. In the Energy field, enter 140.5 for Tc-
99m.
3. Check Detector 1 or Detector 2 to specify
the detector to be measured.
4. Click Continue.
5. Click OK to accept automated motions.
Automated motions will now position the se-
lected detector for measuring uniformity.
Note. Automated motions must be started from the patient load position.
Note. The detector positions used are the same as the ones used for energy resolution measuring.
See page 10-5.
1MAN0158-H11 04-2005 CSIP Level 1
Intrinsic no collimator. One detector at a time.
Tc-99m ~ 7–20 MBq or 200–500 µCi point source, yielding
20 kcps or less.
Point source holder.
FOV mask (part no. 2163-5519)
Note. The mask used for the NEMA uniformity test is not
the NEMA mask.
Approximately 45 minutes per detector.
Details
NEMA Performance Measurement
CardioMD Service Manual 10-7