7-1
SECTION 7
PREVENTIVE MAINTENANCE
This section lists the procedures that should be performed by trained service personnel at least
once per year, and preferably at six-month intervals.
NOTICE
The QDR system meets applicable FDA radiation performance standards through its
useful and expected life provided no components or parts are removed from the system
and no unauthorized adjustment or unauthorized replacement of certified components is
performed.
CUSTOMER PREVENTIVE MAINTENANCE
Hologic requires that the customer run a daily QC scan of the spine phantom supplied with the
QDR 4500, and add that scan to the QC database. If the CV of the database exceeds 0.8% the
customer is asked to apprise Hologic Field Service.
The customer is further advised to perform a weekly backup of the patient database (dbArchive)
and a monthly backup of the QC database (QC archive).
No other regular maintenance activity is recommended or required of the customer.
FIELD SERVICE PREVENTIVE MAINTENANCE
Hologic recommends that the following procedures be performed by trained service personnel at
least once per year, and preferably at six-month intervals:
[ ] Perform dbArchive.
[ ] Check the QC database for any problems (e.g. drift, etc.).
[ ] Check Errorlog.
[ ] Check X-ray tube voltage and current, as described in the
INSTALLATION
section of this
manual.
[ ] Measure scatter, leakage, and patient dose, as described in the
INSTALLATION
section
of this manual.
[ ] Check X-ray beam alignment, as described in the
ALIGNMENT AND CALIBRATION
section of this manual.
[ ] Run the Beam Alignment "Airscan" Test, (Page 4-30), for whole body units (A and W).
[ ] Run 10 spine scans and check calibration.
[ ] Print copies of the baseline phantom scan, recent phantom scan, and the results of
AVERSCAN for the 10 spine scans in the previous step. Compare these printouts with
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