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Lee, Chang Hyeong
Stochastic Analysis & Simulation(SAS) Lab
Research Interests
  • Stochastic analysis/computation, epidemic modeling, biological system simulation

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B-1(+) Shimming with SAR reduction in high-field MRI

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Title
B-1(+) Shimming with SAR reduction in high-field MRI
Author
Son, H.W.Cho, Y.K.Gopinath, A.Vaughan, J.T.Lee, Chang HyeongYoo, H.
Keywords
Field of views; High field MRI; Inhomogeneities; Nonuniformity; Parallel excitation; Parallel imaging; Specific absorption rate; Transmitter and receiver
Issue Date
201308
Publisher
TAYLOR & FRANCIS LTD
Citation
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, v.27, no.12, pp.1521 - 1524
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.
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DOI
http://dx.doi.org/10.1080/09205071.2013.817958
ISSN
0920-5071
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