Abstract #0628

Ultrasound/MR Hybrid Imaging: Truly Simultaneous Motion Monitoring in the Abdomen & Image Co-Registration

Lorena Petrusca¹, Valeria De Luca², Patrik Arnold³, Zarko Celicanin⁴, Thomas Goget⁵, Vincent Auboiroux⁵, Magalie Viallon⁵, Francesco Santini⁴, Sylvain Terraz⁵, Klaus Scheffler⁴, Christine Tanner², Philippe Cattin³, Rares Salomir⁵

¹Radiology Department, University Hospitals of Geneva , Geneva , Switzerland; ²Computer Vision Laboratory, Zurich, Switzerland; ³Center for Medical Images Analysis, Basel, Switzerland; ⁴Radiological Physics, University of Basel Hospital, Switzerland; ⁵Radiology Department, University Hospitals of Geneva, Geneva, Switzerland

Simultaneous US and MR acquisition is a hybrid method that offers a complementary description of the investigated anatomy. The study on healthy volunteers presented here with simultaneous 4DMRI/dynamic 2D ultrasound showed that the technical set-up is appropriate for clinical use and no significant RF mutual interferences were detectable in the acquired images. Post-processing of dual modality data permitted the accurate registration of the same imaging plane in US and MR images, and to overlay the 4DMRI motion vectors on the simultaneous US images from the abdomen during free breathing.