A Modified Phase Cycling Method for Complex-Valued MRI Reconstruction

The phase cycling method is a state-of-the-art method to reconstruct complex-valued MR image. However, when it follows practical two-dimensional (2D) subsampling Cartesian acquisition which is only enforcing random sampling in the phase-encoding direction, a number of artifacts in magnitude appear....

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Main Authors: Wei He, Yu Zhang, Junling Ding, Linman Zhao
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:International Journal of Biomedical Imaging
Online Access:http://dx.doi.org/10.1155/2020/8846220
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author Wei He
Yu Zhang
Junling Ding
Linman Zhao
author_facet Wei He
Yu Zhang
Junling Ding
Linman Zhao
author_sort Wei He
collection DOAJ
description The phase cycling method is a state-of-the-art method to reconstruct complex-valued MR image. However, when it follows practical two-dimensional (2D) subsampling Cartesian acquisition which is only enforcing random sampling in the phase-encoding direction, a number of artifacts in magnitude appear. A modified approach is proposed to remove these artifacts under practical MRI subsampling, by adding one-dimensional total variation (TV) regularization into the phase cycling method to “pre-process” the magnitude component before its update. Furthermore, an operation used in SFISTA is employed to update the magnitude and phase images for better solutions. The results of the experiments show the ability of the proposed method to eliminate the ring artifacts and improve the magnitude reconstruction.
format Article
id doaj-art-5bd77dfa44ef4bfd9bdab14d61ea1a8b
institution Kabale University
issn 1687-4188
1687-4196
language English
publishDate 2020-01-01
publisher Wiley
record_format Article
series International Journal of Biomedical Imaging
spelling doaj-art-5bd77dfa44ef4bfd9bdab14d61ea1a8b2025-02-03T05:57:19ZengWileyInternational Journal of Biomedical Imaging1687-41881687-41962020-01-01202010.1155/2020/88462208846220A Modified Phase Cycling Method for Complex-Valued MRI ReconstructionWei He0Yu Zhang1Junling Ding2Linman Zhao3Department of Computer Science and Technology, Xinyang Normal University, Xinyang 464000, ChinaDepartment of Computer Science and Technology, Xinyang Normal University, Xinyang 464000, ChinaHenan University of Chinese Medicine, Zhengzhou 450046, ChinaDepartment of Computer Science and Technology, Xinyang Normal University, Xinyang 464000, ChinaThe phase cycling method is a state-of-the-art method to reconstruct complex-valued MR image. However, when it follows practical two-dimensional (2D) subsampling Cartesian acquisition which is only enforcing random sampling in the phase-encoding direction, a number of artifacts in magnitude appear. A modified approach is proposed to remove these artifacts under practical MRI subsampling, by adding one-dimensional total variation (TV) regularization into the phase cycling method to “pre-process” the magnitude component before its update. Furthermore, an operation used in SFISTA is employed to update the magnitude and phase images for better solutions. The results of the experiments show the ability of the proposed method to eliminate the ring artifacts and improve the magnitude reconstruction.http://dx.doi.org/10.1155/2020/8846220
spellingShingle Wei He
Yu Zhang
Junling Ding
Linman Zhao
A Modified Phase Cycling Method for Complex-Valued MRI Reconstruction
International Journal of Biomedical Imaging
title A Modified Phase Cycling Method for Complex-Valued MRI Reconstruction
title_full A Modified Phase Cycling Method for Complex-Valued MRI Reconstruction
title_fullStr A Modified Phase Cycling Method for Complex-Valued MRI Reconstruction
title_full_unstemmed A Modified Phase Cycling Method for Complex-Valued MRI Reconstruction
title_short A Modified Phase Cycling Method for Complex-Valued MRI Reconstruction
title_sort modified phase cycling method for complex valued mri reconstruction
url http://dx.doi.org/10.1155/2020/8846220
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AT linmanzhao amodifiedphasecyclingmethodforcomplexvaluedmrireconstruction
AT weihe modifiedphasecyclingmethodforcomplexvaluedmrireconstruction
AT yuzhang modifiedphasecyclingmethodforcomplexvaluedmrireconstruction
AT junlingding modifiedphasecyclingmethodforcomplexvaluedmrireconstruction
AT linmanzhao modifiedphasecyclingmethodforcomplexvaluedmrireconstruction