Radiotherapy deficiencies identified during on-site dosimetry visits by the IROC Houston QA Center

IROC Houston on-site visits of radiotherapy facilities includes an evaluation of beam calibration, relative dosimetry, mechanical checks, and other programmatic issues. The deficiencies identified over the past 15 years are compiled in this study, highlighting areas where problems are most often found (e.g., small field output factors, wedge factors, calibration, etc.). These areas should receive particular attention during beam modeling and machine QA by medical physicists to ensure optimal accuracy is achieved.

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