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Abstract #5429

MR Thermometry-guided Ultrasound Hyperthermia of User-Defined Regions Using the ExAblate Prostate Ablation Array

Eugene Ozhinsky1, Vasant A. Salgaonkar2, Chris J. Diederich2, and Viola Rieke1

1Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, 2Radiation Oncology, University of California San Francisco

We have implemented a real-time MR thermometry-guided system for ultrasound hyperthermia delivery within user-defined regions and validated it in phantom experiments. It was based on the commercial ExAblate prostate transducer, RTHawk real-time MRI system and featured accelerated PRFS MR thermometry and automated steering of the ultrasound focus to ensure uniform heating of the entire region of treatment.

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