Parallel Computing of Patch-Based Nonlocal Operator and Its Application in Compressed Sensing MRI
Joint Authors
Liu, Yunsong
Zhan, Zhifang
Li, Qiyue
Guo, Di
Qu, Xiaobo
Ye, Jing
Chen, Zhong
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-20
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Magnetic resonance imaging has been benefited from compressed sensing in improving imaging speed.
But the computation time of compressed sensing magnetic resonance imaging (CS-MRI) is relatively long due to its iterative reconstruction process.
Recently, a patch-based nonlocal operator (PANO) has been applied in CS-MRI to significantly reduce the reconstruction error by making use of self-similarity in images.
But the two major steps in PANO, learning similarities and performing 3D wavelet transform, require extensive computations.
In this paper, a parallel architecture based on multicore processors is proposed to accelerate computations of PANO.
Simulation results demonstrate that the acceleration factor approaches the number of CPU cores and overall PANO-based CS-MRI reconstruction can be accomplished in several seconds.
American Psychological Association (APA)
Li, Qiyue& Qu, Xiaobo& Liu, Yunsong& Guo, Di& Ye, Jing& Zhan, Zhifang…[et al.]. 2014. Parallel Computing of Patch-Based Nonlocal Operator and Its Application in Compressed Sensing MRI. Computational and Mathematical Methods in Medicine،Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-457966
Modern Language Association (MLA)
Li, Qiyue…[et al.]. Parallel Computing of Patch-Based Nonlocal Operator and Its Application in Compressed Sensing MRI. Computational and Mathematical Methods in Medicine No. 2014 (2014), pp.1-6.
https://search.emarefa.net/detail/BIM-457966
American Medical Association (AMA)
Li, Qiyue& Qu, Xiaobo& Liu, Yunsong& Guo, Di& Ye, Jing& Zhan, Zhifang…[et al.]. Parallel Computing of Patch-Based Nonlocal Operator and Its Application in Compressed Sensing MRI. Computational and Mathematical Methods in Medicine. 2014. Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-457966
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-457966