SBRT 2016

Commissioning: Pre-Measurement Preparation

 Sometimes it is the only time that physicists can extensively measure radiation beams and beam modifiers Consider specific requirements for SRS and SBRT  All in-house dosimetry equipment should be checked for calibration, accuracy, and availability  Mechanical motion of water tank  Noise and leakage of ionization chambers and diodes  Phantom check

 Errors in these phases may affect many patients!