Detector Calibration
4-24
CardioMD Service Manual
1MAN0158-H11 04-2005 CSIP Level 1
Procedure Details
15.
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.
16.
Place a Tc-99m or Co-57 point source of
approximately 160 – 200 MBq or 4 – 5
mCi in the holder.
17.
Ensure that the source is placed precisely
in front of the center of the detector FOV.
18.
Verify that the count rate is < 40 kcps and
that slits are displayed vertically in the im-
age window.
19.
Click Start.
1
2
75
+
/-
3 c
m
185 +/- 3 cm
1
2
75
+
/- 2 c
m
185 +/- 3 cm
After a few million counts, check that all the
slits in the phantom are clearly resolved. The
purpose is to make sure that a defective table
is not causing neighbor tubes to “pull” counts
and distort linearity.
When the calibration in the X-direction is
done, this message pops up.
Note
. Do
not
click OK at this point.
20.
Remove the point source.
Note
. The source must be removed to avoid
saturating the open detector.
21.
Swap phantom from X to Y.
22.
Put the source back in place.
23.
Click OK in the message box.
Slits
Y-linearity phantom
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Страница 10: ...Introduction x CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Страница 16: ...Safe Operating Practices 1 6 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Страница 164: ...Detector Calibration Files 5 60 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Страница 207: ...Installation 1MAN0158 H11 04 2005 CSIP Level 1 CardioMD Service Manual 8 5 Figure 8 2 System footprint with short table ...
Страница 232: ...Installation 8 30 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 Figure 8 17 Installation template ...
Страница 328: ...Installation Procedures 9 38 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
Страница 348: ...Planned Maintenance Procedures 11 6 CardioMD Service Manual 1MAN0158 H11 04 2005 CSIP Level 1 ...
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