Improved simultaneous multislice magnetic resonance imaging using total variation regularization

doi:10.1088/1674-1056/26/11/118701

中国物理B ›› 2017, Vol. 26 ›› Issue (11): 118701-118701.doi: 10.1088/1674-1056/26/11/118701

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Improved simultaneous multislice magnetic resonance imaging using total variation regularization

Ya-Jun Ma(马亚军), Sha Li(李莎), Song Gao(高嵩)

1. Department of Medical Physics, Health Science Center of Peking University, Beijing 100191, China;
2. Department of Radiotherapy, Beijing Cancer Hospital, Beijing 100142, China

收稿日期:2017-06-08 修回日期:2017-08-22 出版日期:2017-11-05 发布日期:2017-11-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61671026) and the Natural Science Foundation of Beijing, China (Grant No. 7162112).

Improved simultaneous multislice magnetic resonance imaging using total variation regularization

Ya-Jun Ma(马亚军)¹, Sha Li(李莎)^1,2, Song Gao(高嵩)¹

1. Department of Medical Physics, Health Science Center of Peking University, Beijing 100191, China;
2. Department of Radiotherapy, Beijing Cancer Hospital, Beijing 100142, China

Received:2017-06-08 Revised:2017-08-22 Online:2017-11-05 Published:2017-11-05
Contact: Song Gao E-mail:gaoss@pku.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61671026) and the Natural Science Foundation of Beijing, China (Grant No. 7162112).

摘要/Abstract

摘要： Controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) for simultaneous multislice imaging has been proposed recently, which combines multiband excitation and phase cycling techniques to reduce scan time and improve subsequent imaging reconstruction. In this work, the total variation (TV) regularization method is used to further improve CAIPIRINHA. The TV regularization uses an edge-preserving prior, which establishes a relationship between neighboring pixels for image reconstruction. It reduces artifacts and suppresses noise amplification simultaneously. The results are presented with a standard eight-channel head coil with an acceleration factor of 4, where the TV-regularized CAIPIRINHA generates an improved reconstruction as compared with a typical nonregularized CAIPIRINHA.

关键词: caipirinha, simultaneous multislice imaging, total variation

Abstract: Controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) for simultaneous multislice imaging has been proposed recently, which combines multiband excitation and phase cycling techniques to reduce scan time and improve subsequent imaging reconstruction. In this work, the total variation (TV) regularization method is used to further improve CAIPIRINHA. The TV regularization uses an edge-preserving prior, which establishes a relationship between neighboring pixels for image reconstruction. It reduces artifacts and suppresses noise amplification simultaneously. The results are presented with a standard eight-channel head coil with an acceleration factor of 4, where the TV-regularized CAIPIRINHA generates an improved reconstruction as compared with a typical nonregularized CAIPIRINHA.

Key words: caipirinha, simultaneous multislice imaging, total variation

中图分类号: (Reconstruction)

87.57.nf

87.61.Jc (Anatomic imaging)

马亚军, 李莎, 高嵩. Improved simultaneous multislice magnetic resonance imaging using total variation regularization[J]. 中国物理B, 2017, 26(11): 118701-118701.

Ya-Jun Ma(马亚军), Sha Li(李莎), Song Gao(高嵩). Improved simultaneous multislice magnetic resonance imaging using total variation regularization[J]. Chin. Phys. B, 2017, 26(11): 118701-118701.

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Improved simultaneous multislice magnetic resonance imaging using total variation regularization

Improved simultaneous multislice magnetic resonance imaging using total variation regularization

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