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Abstract #2588

Correction of Bulk Motion and Assessment of Non-Rigid Deformations in Follow-Up Examinations of the Pelvis

Julien Senegas1, Christian Buerger1, Torbjoern Vik1, Peter Mazurkewitz1, Peter Koken1

1Philips Research Laboratories, Hamburg, Germany

The focus of this work is on the pelvis area, as MRI is being more and more established as imaging modality to assess and monitor prostate cancer and is expected to play an increasing role in the adaptive planning of radiation therapy. We investigated in volunteers a method to correct for bulk motion between consecutive examinations and analyzed the amplitude of local, non-rigid deformations as the consequence of bladder and rectum filling, with particular focus on the prostate.