Abstract #1811

in vivo Evaluation of Hybrid PRF/T1 Approach for Temperature Monitoring During Breast MRgHIFU Treatments

Nick Todd¹, Mahamadou Diakite², Allison Payne², Dennis L. Parker¹

¹Radiology, University of Utah, Salt Lake City, UT, United States; ²Physics, University of Utah, Salt Lake City, UT, United States

The goal is to simultaneously measure temperature changes in aqueous and adipose tissues to properly monitor MR-guided HIFU treatments of localized breast cancer. To achieve this, we have developed a 2D multi-echo hybrid PRF/T1 sequence which measures PRF changes in water-based tissues and T1 values in fat-based tissues. The precision of the technique was evaluated by imaging four female volunteers in our developed breast-specific MRgHIFU system.