Rainbow IMRT and Volumetric Imaging for Anterior Mesenteric Targets.

Yoder, Alison K; Gunther, Jillian R; Milgrom, Sarah A; Pham, Mary; Hancock, Donald; McSpadden, Kelli; Garcia, John; Mirkovic, Dragan et al. · Pract Radiat Oncol · 2019

case_report · Level V

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Abstract

Mesenteric masses can considerably shift positions between fractions of radiation therapy (RT). With image-guided RT, we can adapt our treatment delivery daily to target the mass while avoiding surrounding structures. We report the case of a highly-mobile mesenteric mass which required adaptive planning from a traditional “butterfly” intensity modulated radiation therapy (IMRT) plan to an anterior “rainbow” beam arrangement to permit shifting of the isocenter without compromising target coverage or increasing dose to organs-at-risk.

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