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Why Is

Accuracy

So Important?

OAR delineation has significant impact on dose calculation and

plan quality in dosimetry

IMRT and VMAT are inverse planning techniques and as such

are driven by volumes

Target and OAR relationship

Accurate imaging ensures:

Decrease in interobserver variability

DVH calculation

Greater confidence in predicting toxicity

“reduction in inter- and intra-observer variability and therefore

unambiguous reporting of possible dose-volume effect relationships”

(van der Water, 2009)