Philips CARDIOMD, Service Manual

Page: 77 / 466

Calibration
1MAN0158-H11 04-2005 CSIP Level 1
CardioMD Service Manual
„
4-21
Procedure Details
The ECor page appears.
7. Unless a major repair requires a calibra-
tion from scratch, select Update ECOR ta-
ble.
8. Select the appropriate isotope (either Tc-
99m or Co-57).
9. Select detector 1 or 2 to be calibrated.
Note . If updating ECor, either isotope can be
selected. The update is not dependent upon the
isotope used during the initial ECor calibra-
tions.
10. Click Continue.
11. Press and hold the hand controller Colli-
sion Override button for a minimum of 4
seconds before proceeding as follows:
12. While still pressing Collision Override,
click OK to accept automated motions
bringing the system into position for cali-
bration of the selected detector.
Note . The hand controller Collision Override
button must be kept depressed during all
automated motions to enable power to the
motors.
Note . Automated motions must be started
from the patient load position.
13. Place the point source holder at a distance
of approximately 1.85 meters (6 ft.) from
the detector to be calibrated.
14. Place a Tc-99m or Co-57 point source of
approximately 40 MBq or 1 mCi in the
holder.
15. 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
16. When the source is in position, click Start
to begin the calibration.