WE‐C‐WAB‐06: Effects of Radiation On Functional Bone Marrow in Patients with Pelvic Malignancies

Purpose: To test the hypothesis that pelvic bone marrow fat fraction (FF) (i.e., quantity of fat relative to water) varies with glucose metabolism and radiation dose in patients undergoing pelvic radiotherapy. Methods: 34 patients with pelvic malignancies were enrolled from 2009‐2012 on prospective trials; 31 received concurrent chemotherapy. All patients underwent baseline 18 F‐FDG‐PET and quantitative MRI with IDEAL‐IQ. 9 patients underwent...