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PTVRT and the dose distributions optimized for PTVC (left) and optimized for PTVD (right). PTVRT: PTV delineated on the CT registered with the MRI scan in the radiotherapy position; PTVC: PTV delineated using the CT with the diagnostic MRI scan viewed on a separate console; PTVD: PTV delineated on the CT registered with the diagnostic MRI scan.
