Is there a strong rationale for contouring small and large bowel structures for GI cases of IMRT/VMAT/3D-CRT separately?
These structures are mobile and their location changes depending on bowel filling, gas, patient set-up, etc. Is there an advantage to contouring small and large bowel structures compared to a bowel bag for GI cases?
1 Answer
Mednet MemberInvited Expert
Radiation Oncology · University of North Carolina at Chapel Hill
Answered on
It depends on the clinical situation. However, keep in mind that these structures are not all mobile. An example is that the C-loop of the duodenum always retains its relationship to the pancreas. For large bowel, there is relatively little mobility of the ascending and descending colon (although th...
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