System Calibration Quick Guide - GE Discovery LS System Service Manual

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