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Seek advice and share experiences of performing QA and calibration checks with SGRT technology.
By james_murray
Anyone have any protocol or test procedure for validating the AlignRT software post upgrade?  I would presume a monthly cal and SRS Cube cal.

Thanks, Jim
By michael_tallhamer_msc_dabr

We use the following approach after every software upgrade with some items being based on the items affected during the upgrade. Tolerances are up to your institution.

1. If the camera calibration is wiped out as a result of the upgrade the following is done first if not skip to Step 2

Perform a monthly calibration (we use raised plate here but you can use whatever you wish to use for your clinic)
Perform Daily QA
Complete a Isocenter cube calibration

2. Daily QA is performed and validated against statistical trend of previous Daily QAs

3. Isocenter cube calibration verification is completed (tolerances 0.01cm or 0.1degree)

4. Monthly camera only end-to-end test (no linac based imaging done)

Hidden target test using only the camera for phantom positioning followed by WL imaging a 8 gantry/couch positions (tolerance <1.0mm for SRS)

5. Monthly end-to-end test

Hidden target test using the cameras for initial setup of the phantom followed by CBCT positioning and a WL imaging a 8 gantry/couch positions (tolerance <0.5mm for SRS)

6. Run Daily QA

Includes TG-142tests, TG-147 tests, Linac interface check, and software functionality tests

Static localization
Dynamic localization
Static position vs DICOM coordinates
Camera stability
Obstruction testing
Gating testing
Automated remote positioning
Surface Tools SSD check
ROI propagation
Reference and treatment imaging