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Abstract #4238

Evaluation of Dixon based Soft Tissue and Bone Classification in the Pelvis for MR-only-based Radiation Therapy Planning

Michael Helle 1 , Nicole Schadewaldt 1 , Marloes Frantzen-Steneker 2 , Heinrich Schulz 1 , Christian Stehning 1 , Uulke van der Heide 2 , and Steffen Renisch 1

1 Philips Research Laboratories, Hamburg, Germany, 2 Department of Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands

Radiation therapy planning can benefit from the superior display of soft tissue contrasts and the delineation of tumor and critical organs in magnetic resonance imaging. In this study, an advanced approach on the basis of Dixon MR techniques with subsequent reconstruction workflow is introduced for soft tissue and bone classification in order to generate MR-derived simulated computed tomography (CT) maps. For the first time, this method is evaluated in patients with corresponding true CT data and radiation therapy plans.

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