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Abstract #1804

Deformable registration of abdominal mion-enhanced MR images for presurgical and radiotherapy planning of lymph nodes

Harisinghani M, Chefdhotel C, Seethamraju R, Azar F
Massachusetts General Hospital

In order to determine the extent of metastasis in lymph nodes, pre- and post-MION enhanced MR images of the abdomen are co-registered. This initial patient study tests the performance of a rigid and a non-rigid registration algorithm on abdominal MR data and shows that accurate registration may enable significant improvement in detection rate of lymph node metastasis. In addition nodal information from pre-contrast images may be used to accurately identify nodal boundaries on post-contrast images. Registration of anatomical images with MRAs or CTs, will pave the way for precise surgical planning or radiotherapy.