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Pre-Measurement Preparation
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Sometimes it is the only time that physicists can
extensively
measure
radiation beams and beam modifiers
•
All in-house dosimetry equipment should be checked for calibration,
accuracy, and availability
•
Mechanical motion of water tank
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Noise and leakage of ionization chambers and diodes
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Phantom check
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Errors in these phases may affect many patients!
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BUT DON’T FORGET PATIENT-SPECIFIC QA