![](/images/graphics-bg.png)
Energy Preserved Sampling for Compressed Sensing MRI
Joint Authors
Peterson, Bradley S.
Zhang, Yudong
Ji, Genlin
Dong, Zhengchao
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-26
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The sampling patterns, cost functions, and reconstruction algorithms play important roles in optimizing compressed sensing magnetic resonance imaging (CS-MRI).
Simple random sampling patterns did not take into account the energy distribution in k-space and resulted in suboptimal reconstruction of MR images.
Therefore, a variety of variable density (VD) based samplings patterns had been developed.
To further improve it, we propose a novel energy preserving sampling (ePRESS) method.
Besides, we improve the cost function by introducing phase correction and region of support matrix, and we propose iterative thresholding algorithm (ITA) to solve the improved cost function.
We evaluate the proposed ePRESS sampling method, improved cost function, and ITA reconstruction algorithm by 2D digital phantom and 2D in vivo MR brains of healthy volunteers.
These assessments demonstrate that the proposed ePRESS method performs better than VD, POWER, and BKO; the improved cost function can achieve better reconstruction quality than conventional cost function; and the ITA is faster than SISTA and is competitive with FISTA in terms of computation time.
American Psychological Association (APA)
Zhang, Yudong& Peterson, Bradley S.& Ji, Genlin& Dong, Zhengchao. 2014. Energy Preserved Sampling for Compressed Sensing MRI. Computational and Mathematical Methods in Medicine،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-480403
Modern Language Association (MLA)
Zhang, Yudong…[et al.]. Energy Preserved Sampling for Compressed Sensing MRI. Computational and Mathematical Methods in Medicine No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-480403
American Medical Association (AMA)
Zhang, Yudong& Peterson, Bradley S.& Ji, Genlin& Dong, Zhengchao. Energy Preserved Sampling for Compressed Sensing MRI. Computational and Mathematical Methods in Medicine. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-480403
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-480403