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Radiation Oncology • Gastrointestinal Cancers
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?
Answer from: Radiation Oncologist at Academic Institution
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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