Abstract

The use of Adaptive radiation therapy (ART) in head and neck cancer (HNC) is evolving. We attempted to quantify anatomic volumetric changes during IMRT in two groups of patients; those with bulky disease (Group B) and those treated postoperatively (Group PO). Feedback CT imaging at 3 and 6 weeks was used to assess the comparative magnitude of anatomical variation caused by tumor shrinkage or weight loss in the individual patient and to trigger plan alteration.

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