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Abstract #2345

Genomically and Radiographically Adjusted Dose (GRAD) Framework for Biologically Adaptive MR-guided Radiotherapy

Zachary R. L. Boyd1, William A. Hall2, Douglas E. Prah2, and Eric S. Paulson1,2,3

1Biophysics, Medical College of Wisconsin, Milwaukee, WI, United States, 2Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI, United States, 3Radiology, Medical College of Wisconsin, Milwaukee, WI, United States

Tumor burden, tumor proliferation, and tumor hypoxia, all of which vary in space and time, are evidence-based contributors of radiotherapy failure. In addition, it has been demonstrated that gene expression can influence radiosensitivity. We demonstrate here the initial feasibility of a framework to incorporate genomic and radiographic information to derive patient-specific, voxelwise radiation dose prescription maps for use in a biologically adaptive MR-guided radiotherapy (BAMRgRT) strategy.

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