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Proceedings Paper

MRI truncation artifact reduction via wavelet shrinkage
Author(s): C. W. Kok; Y. Hui; Truong Q. Nguyen
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Paper Abstract

A method based on wavelet shrinkage theory is proposed to reduce the truncation artifact in magnetic resonance imaging (MRI). This wavelet-based method takes advantages of various optimal and near-optimal properties of wavelets and wavelet shrinkage, which cannot be achieved by the methods based on other basis. Another advantage is that its performance does not degrade significantly in an environment with low SNR, which is usually the case in MRI applications. Different wavelet bases, including a recently proposed shift-invariant wavelet basis, are explored for improving the performance of the proposed approach. The proposed method is analyzed and compared with the conventional technique, based on Fourier analysis, using both simulated and real MR images.

Paper Details

Date Published: 3 April 1997
PDF: 11 pages
Proc. SPIE 3078, Wavelet Applications IV, (3 April 1997); doi: 10.1117/12.271729
Show Author Affiliations
C. W. Kok, Univ. of Wisconsin/Madison (United States)
Y. Hui, Univ. of Illinois/Urbana-Champaign (United States)
Truong Q. Nguyen, Boston Univ. (United States)

Published in SPIE Proceedings Vol. 3078:
Wavelet Applications IV
Harold H. Szu, Editor(s)

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