GE Discovery LS, Руководство по обслуживанию системы

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GE
HEALTHCARE
D
IRECTION
2307224-100, R
EVISION
6 D
ISCOVERY
LS S
YSTEM
S
ERVICE
M
ANUAL
Appendix B - System Calibration Quick Guide Page 347
Appendix B - System Calibration Quick Guide
The table below contains a list of the calibration procedures necessary for the regular operation of
the Discovery LS PET-CT system. The PET calibration procedures are described in the
PET
Advance Operator Manual, Direction 2280383-100.
The calibrations should be performed in the
order presented in the table.
Note: Well Counter Correction should be performed after running the VQC procedure.
No. Calibration Type Frequency Duration
1 Reboot Daily 5 min.
2 Singles:
Update Gain Weekly
• When performing position
(crystal map calibration).
• After detector or ACEM board
replacement.
50 - 240 min.
3 Singles:
Position • Every 3 months.
• After detector replacement.
50 min.
4 Singles:
Energy • Every 3 months.
• When performing position
(crystal map calibration).
50 min.
5 CTC Weekly 10 - 15 min.
6 Blank Scan Daily 30 min.
7 Normalization Every 3 months 12, 18, or 24 hours
depending on
sources strength.
8 VQC Weekly during 4-8 weeks after initial
installation, then monthly. 15 min.
9 Well Counter
Calibration Every 3 months. 1 - 2 hours
10 Tube Warm-Up Daily 1 min.
11 Fast Cals Daily
(Once every 3 months, a full
System call must be performed by a
Service Engineer.) 30 min.
12 Clean Database Weekly 20 min.