9 System maintenance
86500-IMG rev 3 GE Healthcare 69
* With mobile installations without development of films (i.e., film changer),
check with familiar phantom that kV and mAs values are OK.
CAUTION!
Refer to local regulations and instructions concerning the testing of the
unit.
If the unit does not meet the manufacturer´s specifications, regardless of
proper maintenance and repair, the operating life of the unit has come to
an end. As the used X-ray tube and oil, high voltage unit, all electronic
boards and parts of lead in collimator and under the AEC detectors are
toxic waste, refer to country-specific disposal instructions.
TEST FREQUENCY TOOL(S) PERFORMED BY
Film Processor Daily Thermometer
Densitometer
Sensitometer
Radiographer/
Technologist
Image Quality Weekly RMI 156D Phantom Radiographer/
Technologist
Physician
Phototimer
Reproducibility
Monthly
Daily (mobile
installation*)
Acrylic phantom Radiographer/
Technologist
Physician
Film/Screen
Contact
Semi-annually Contact test tool Physicist or
Service
Technician
kVp Semi-annually Dynalyzer Physicist
Dose/Patient
Exposure
Semi-annually Ion Chamber or
semi-conductor
detector
Physicist
Half-Value Layer
(HVL)
Semi-annually Aluminum HVL set
with Ion Chamber
or semi-conductor
detector
Physicist
mAs (mA) Semi-annually Dynalyzer (mAs
meter)
Physicist or
Service
Technician
mAs Linearity Semi-annually Ion Chamber
(Digital) or semi-
conductor detector
Physicist or
Service
Technician
Compression Semi-annually Scale Radiographer/
Technologist
Exposure
Reproducibility
(mR/mAs)
Annually Ion Chamber or
semi-conductor
detector
Physicist or
Service
Technician
Line pair
resolution
Annually Bar Pattern Physicist
FOR TRAINING PURPOSES ONLY!
NOTE: Once downloaded, this document is UNCONTROLLED, and therefore may not be the latest revision. Always confirm revision status against a validated source (ie CDL).
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