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 Zhang^3,4, 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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