During acceptance testing and commissioning of the TrueBeam STx at Stanford University, the leaf position accuracy
was verified and optimized. The vendor supplied LPO file was
verified during acceptance testing by driving the MLCs to various positions using a vendor supplied DICOM file over the
usable 40 cm×22 cm field size and checking alignment with
the light field using at isocenter using millimeter graph paper.
Leaf position repeatability was checked by performing a single leaf position test ten times, with the linac on autocycle in
service mode.
The RFO