Numerical Evaluation on Irregular Field Generated by Screening Current in High-Field REBCO Coil for Whole-Body MRI

Kohei Nakazono; Hiroshi Ueda; Atsushi Ishiyama; So Noguchi; Hiroshi Miyazaki; Taizo Tosaka; Tsutomu Kurusu; Shunji Nomura; Shinichi Urayama; Hidenao Fukuyama

doi:10.1109/TASC.2016.2645839

Numerical Evaluation on Irregular Field Generated by Screening Current in High-Field REBCO Coil for Whole-Body MRI

Kohei Nakazono, Hiroshi Ueda, Atsushi Ishiyama, So Noguchi, Hiroshi Miyazaki, Taizo Tosaka, Tsutomu Kurusu, Shunji Nomura, Shinichi Urayama, Hidenao Fukuyama

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

In recent years, high-field magnets wound with REBCO tape and their applications to magnetic resonance imaging (MRI) have undergone considerable research and development. MRI coil systems require a highly accurate field in the imaging space. However, in REBCO coils, the irregular magnetic field generated by the screening current is induced by the radial component of the magnetic field in the REBCO tape, and may deteriorate the field quality both spatially and temporally. Therefore, a design process with consideration for the effect of the screening-current field is required for the reduction and correction of this field for a high-accuracy-field REBCO coil. In this study, the screening-current distribution in the REBCO tape and the irregular magnetic field were analyzed by using the simulation we developed for a REBCO model coil system for whole-body MRI. We additionally discuss the effect of the screening-current field in the REBCO coil based on the coil shape and arrangement to use it as feedback to the design stage.

Original language	English
Article number	7801085
Journal	IEEE Transactions on Applied Superconductivity
Volume	27
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2016.2645839
Publication status	Published - Jun 1 2017

Keywords

High-temperature superconducting coil
irregular magnetic field
MRI
screening current
three-dimensional electromagnetic field analysis

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Nakazono, K., Ueda, H., Ishiyama, A., Noguchi, S., Miyazaki, H., Tosaka, T., Kurusu, T., Nomura, S., Urayama, S., & Fukuyama, H. (2017). Numerical Evaluation on Irregular Field Generated by Screening Current in High-Field REBCO Coil for Whole-Body MRI. IEEE Transactions on Applied Superconductivity, 27(4), [7801085]. https://doi.org/10.1109/TASC.2016.2645839

Numerical Evaluation on Irregular Field Generated by Screening Current in High-Field REBCO Coil for Whole-Body MRI. / Nakazono, Kohei; Ueda, Hiroshi; Ishiyama, Atsushi; Noguchi, So; Miyazaki, Hiroshi; Tosaka, Taizo; Kurusu, Tsutomu; Nomura, Shunji; Urayama, Shinichi; Fukuyama, Hidenao.

In: IEEE Transactions on Applied Superconductivity, Vol. 27, No. 4, 7801085, 01.06.2017.

Research output: Contribution to journal › Article

Nakazono, Kohei ; Ueda, Hiroshi ; Ishiyama, Atsushi ; Noguchi, So ; Miyazaki, Hiroshi ; Tosaka, Taizo ; Kurusu, Tsutomu ; Nomura, Shunji ; Urayama, Shinichi ; Fukuyama, Hidenao. / Numerical Evaluation on Irregular Field Generated by Screening Current in High-Field REBCO Coil for Whole-Body MRI. In: IEEE Transactions on Applied Superconductivity. 2017 ; Vol. 27, No. 4.

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