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Design of High Linearity and Low Power Gradient Coil Based on Magnetic Field Harmonic Analysis Method

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Abstract

The design of a low-power gradient coil is of great importance for reducing the volume of low-field nuclear magnetic resonance (NMR) and improving its detection capability. In this paper, a gradient coil of low power without extra cooling device is optimized by solving the harmonic distribution of magnetic field at the field point and introducing the power consumption as the optimization objective function. Then, the gradient coil is designed by finite element method to solve the gradient field distribution in reverse. The simulation results show that the designed gradient coil possesses a very high linearity. Finally, the designed gradient coil is measured by Hall probe and NMR. The experimental results show that the designed gradient coils have the characteristics of strong gradient field, high linearity and low power. In conclusion, the gradient coils designed based on magnetic field harmonic analysis method are provided with low power consumption and excellent performance.

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The datasets supporting the conclusions of this article are included within the article.

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Acknowledgements

The authors sincerely thank Professor Zonghai Xie of Core Laboratory in the USA for his critical discussion during manuscript preparation.

Funding

Supported by National Key Scientific Instrument and Equipment Development Project of China (Grant no. 51627808), National Natural Science Foundation of China (Grant no. 52075098).

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Authors and Affiliations

  1. School of Mechanical Engineering, Southeast University, Nanjing, 211189, China

    Yu-Chen Wu, Zhu Hu, Chong Bao, Xin-Long Zhou, Zhong-Hua Ni, Hong Yi & Rong-Sheng Lu

  2. Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, 211189, China

    Yu-Chen Wu, Zhu Hu, Chong Bao, Xin-Long Zhou, Zhong-Hua Ni, Hong Yi & Rong-Sheng Lu

  3. State Key Laboratory of Bioelectronics Key Laboratory, Southeast University, Nanjing, 211189, China

    Zhong-Hua Ni, Hong Yi & Rong-Sheng Lu

Authors
  1. Yu-Chen Wu
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  2. Zhu Hu
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  3. Chong Bao
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  4. Xin-Long Zhou
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  5. Zhong-Hua Ni
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  6. Hong Yi
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  7. Rong-Sheng Lu
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Contributions

The authors’ contributions are as follows: RL, HY and ZN were in charge of the whole trial; YW and ZH wrote the manuscript; ZH assisted with sampling and laboratory analyses.

Corresponding authors

Correspondence to Hong Yi or Rong-Sheng Lu.

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Wu, YC., Hu, Z., Bao, C. et al. Design of High Linearity and Low Power Gradient Coil Based on Magnetic Field Harmonic Analysis Method. Appl Magn Reson 53, 1449–1465 (2022). https://doi.org/10.1007/s00723-022-01477-9

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  • DOI: https://doi.org/10.1007/s00723-022-01477-9

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