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Design and Optimization of a Four-Channel Received Coil for Vertical-Field MRI

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Abstract

Signal-to-noise ratio (SNR) is an important factor in magnetic resonance imaging (MRI), and it strongly depends on the structure of radio frequency (RF) coils. To obtain a high SNR and uniform image in a vertical-field MRI at 0.5 T, a four-channel received coil has been designed and optimized by establishing the relationship between coil geometry and SNR. Then, the most efficient design of coil array is optimized by the Particle Swarm Optimization (PSO) algorithm. After optimization, the coil is manufactured, where the decoupling is implemented with only inductors and operated at the permanent magnet MRI system built in our laboratory. Finally, SNR map with pixel-by-pixel manner is applied to evaluate the imaging quality, which shows the accuracy between simulated and experimental results. Furthermore, a higher SNR and a more homogeneity in the image have been achieved by the optimized coil array. Hence, this optimized design for the phased-array received coil in vertical-field MRI is verified and applicable.

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Acknowledgments

This work was supported by Project Grants YZ201445, YZ201313 from the Chinese Academy of Sciences Research and Development Project for Equipment and BK20131171 from Jiangsu Science and Technology Project.

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Authors and Affiliations

  1. Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, Jiangsu, China

    Qiaoyan Chen, Yajie Xu, Yan Chang & Xiaodong Yang

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Qiaoyan Chen

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  1. Qiaoyan Chen
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  2. Yajie Xu
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  3. Yan Chang
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  4. Xiaodong Yang
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Correspondence to Xiaodong Yang.

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Chen, Q., Xu, Y., Chang, Y. et al. Design and Optimization of a Four-Channel Received Coil for Vertical-Field MRI. Appl Magn Reson 47, 1147–1158 (2016). https://doi.org/10.1007/s00723-016-0822-4

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  • DOI: https://doi.org/10.1007/s00723-016-0822-4

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