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Abstract #4010

Attenuation of the dark band artifact in MR-guided focused ultrasound using an ultra-flexible high-sensitivity head coil

Isabelle Saniour1, Fraser Robb2, Victor Taracila2, Henning U. Voss1, Michael G. Kaplitt3, J. Levi Chazen1, and Simone Angela Winkler1
1Department of Radiology, Weill Cornell Medicine, New York, NY, United States, 2MR Engineering, GE Healthcare, Aurora, OH, United States, 3Department of Neurological Surgery, Weill Cornell Medicine, New york, NY, United States

Transcranial magnetic resonance guided focused ultrasound (MRgFUS) has shown dramatic success in the treatment of various neurodegenerative diseases. However, black band artifacts arise in MR images due to the high-permittivity water bath and the metallically lined helmet-shaped transducer together with the vendor-installed body coil. In this work, we present electromagnetic simulations of a very thin, flexible, and acoustic transparent head coil design (FUS-Flex). Simulations show a signal-to-noise-ratio (SNR) increase of 3.5× and 5× compared to a body coil with and without the transducer, respectively, and an attenuation of the black band artifact in the regions of interest.

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