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Abstract #3821

A flexible 11-channel coil array for MR-guided high-intensity focused ultrasound (HIFU) studies on rabbit leg muscle at 3 T

Qiaoyan Chen 1, Rui Jiang1, Changjun Tie1, Jianhong Wen1, Xing Yang2, Chao Zou1, Xiaoliang Zhang3,4, Xin Liu1, Hairong Zheng1, and Ye Li1

1Lauterbur Imaging Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China, 2High Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan Province, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China, Chengdu, China, 3Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, 4UCSF/UC Berkeley Joint Graduate Group in Bioengineering, San Francisco, CA, United States

Signal-to-noise ratio (SNR) of the radio frequency (RF) receive coil array is a critical factor affecting the accuracy of temperature measurement in MR-guided high-intensity focused ultrasound (HIFU) for local heating. In this work, a flexible 11-channel coil array was designed, constructed and evaluated for MR-guided HIFU studies on rabbit leg muscle at a 3 T MRI scanner. Compared to a commercial available 4-channel flexible coil array, the dedicated 11-channel coil array provides improved performance in SNR, parallel imaging capability, and the accuracy of temperature measurement.

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