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Abstract #1739

Changes in Attenuation Coefficient in MRgFUS Treatments of In-Vivo Rabbit Thigh Estimated using MRTI-Derived Specific Absorption Rate Patterns

Urvi Vyas1, Allison Payne1, Nick Todd1, Dennis L. Parker1, Robert B. Roemer1, Douglas A. Christensen1

1University of Utah, Salt Lake City, UT, United States

The accuracy of acoustic properties used in beam simulation techniques impacts the accuracy and efficacy of treatment planning and control in Magnetic Resonance Imaging-guided focused ultrasound surgery (MRIgFUS). In this research we use the traditional rate of heating technique with an optimization routine, MR-temperature imaging and a fast beam propagation technique to non-invasively estimate subject-specific tissue acoustic properties.