Advanced Skills in Modern Radiotherapy 2018

MU range checking

• In house NKI development, but easy to build

• Plans following a certain protocol, e.g. prostate – Amount of MU for a VMAT plan will be similar for each patient – Depends a little on patient size, etc

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MU range check

– If patient does not fall within the range, something may have gone wrong – Check by physics – About 5-10% – Usually anatomical reasons – Some errors found (wrong dose specification point, #fractions)