Chancelor B Christensen, MS

To commission the SRS MapCHECK detector for patient-specific quality assurance (PSQA) of CyberKnife multileaf collimator (MLC) treatment plans and to evaluate its clinical performance across multiple disease sites using stringent gamma analysis criteria.

MapCheck3 diode array in the MapPHAN phantom (Sun Nuclear Corporation, Melbourne, FL) appears as a reliable tool for IMRT/VMAT QAs. The objective of this work is the validation of the device for SBRT patient specific QAs (PSQA).

Prostate SBRT demands high geometric precision due to large fractional doses and steep dose gradients. Conventional PTV margins are typically derived from population-level estimates and may not reflect individual patient-specific motion. This work introduces...