IMRT Course 2016

Wu et al. 2009 (IJROPB 75(3))

Anatomical changes of trending nature

example: planning CT and 6 weeks later…

• systematic shrinkage of tumor/parotid volumes during treatment course, OARs move into high dose • overdosage of OARs as compared to planning, and potential partial misses of CTVs • more serious esp. for IMRT due to steep dose gradients My personal opinion: High(est) potential for clinical improvements by repeat imaging and multiple replanning/adaptation. Wishful for the future: ‘flag’/red light identifying patients who benefit most from one or multiple adaptations

ESTRO IMRT course 2016 Adaptive Radiotherapy London April 7th, 2016

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