Abstract #3898

Improving signal-to-noise ratio and contrast in Wrist Magnetic Resonance Imaging at 1.5T with Wireless Metasurface Resonantor

Yakui Wang¹, Zhonghai Chi², Yi Yi¹, Maopeng Wu², Lixue Wang¹, Deqing Jiang¹, Li He¹, Xihai Zhao³, Yonggang Meng², Ji Zhou⁴, Qian Zhao², and Zhuozhao Zheng¹

¹Department of Radiology, Beijing Tsinghua Changgung Hospital, School of Medicine, Tsinghua University, Beijing, China, ²State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, China, ³Center for Biomedical Imaging Research, Department of Biomedical Engineering,School of Medicine, Tsinghua University, Beijing, China, ⁴State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China

Synopsis

Keywords: Non-Array RF Coils, Antennas & Waveguides, Joints, MetasurfaceWe designed a wireless metasurface resonator(WMR) for wrist magnetic resonance imaging(MRI) at 1.5T and tested the imaging effect. Phantoms and 14 wrist jionts(7 healthy volunteers) were examed with T1W SE and fat-suppressed PDW FSE sequences at a 1.5T MRI system. Commercial 12-channel wrist array coil(12CH-WR) and WMR(coupling with integrated spine coil) were used to receive MR signal respectively. We found that WMR could improve the image SNR by 1.5~2 times, and significantly improve the image contrast compared with the traditional 12CH-WR.

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