Shimming with SAR reduction in high-field MRI

H. W. Son; Y. K. Cho; A. Gopinath; J. T. Vaughan; C. H. Lee; H. Yoo

doi:10.1080/09205071.2013.817958

Shimming with SAR reduction in high-field MRI

H. W. Son, Y. K. Cho, A. Gopinath, J. T. Vaughan, C. H. Lee, H. Yoo

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2 Scopus citations

Abstract

In high-field magnetic resonance imaging systems, parallel excitation with a multi-channel transmitter and receiver has been widely investigated to mitigate inhomogeneity. Multi-channel RF coils employed in the parallel imaging may alleviate the non-uniformity in the field and each element can be independently controlled by adjusting the phase and amplitude of the excitation. In this paper, convex optimization for each coil elements to homogenize and to reduce E fields is proposed. Improved homogeneity and reduced specific absorption rate over the whole field of view is achieved.

Original language	English (US)
Pages (from-to)	1521-1524
Number of pages	4
Journal	Journal of Electromagnetic Waves and Applications
Volume	27
Issue number	12
DOIs	https://doi.org/10.1080/09205071.2013.817958
State	Published - Aug 1 2013

Bibliographical note

Funding Information:
This work was supported by University of Ulsan, School of Excellence in Electrical Engineering.

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AU - Cho, Y. K.

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AU - Vaughan, J. T.

AU - Lee, C. H.

AU - Yoo, H.

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Shimming with SAR reduction in high-field MRI

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