Abstract #3823

Improved MR thermometry using saturation bands to suppress water signal

Henrik Odéen¹, Allison Payne¹, Viola Rieke¹, Sunil Patil², Bradley D. Bolster Jr.³, Himanshu Bhat⁴, and Dennis L Parker¹

¹Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT, United States, ²Siemens Healthineers, Baltimore, MD, United States, ³Siemens Healthineers, Salt Lake City, UT, United States, ⁴Siemens Healthineers, Boston, MA, United States

MR guided focused ultrasound (MRgFUS) treatments are routinely monitored by MR thermometry (MRT). Image quality and MRT precision can be significantly degraded by water motion in the water bath used to couple the FUS transducer to the target tissue. This problem is especially challenging when the water bath surrounds the target tissue. In this work we investigate the use of saturation bands to suppress the unwanted signal in dedicated breast and brain MRgFUS systems. It is shown that using saturation bands to suppress signal from the water bath significantly reduces artifacts and improves MRT precision with potentially shorter scan times.

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