Improved simultaneous multislice magnetic resonance imaging using total variation regularization

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

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.

Keywords: caipirinha simultaneous multislice imaging total variation

Received: 08 June 2017
Revised: 22 August 2017
Accepted manuscript online:

PACS:	87.57.nf	(Reconstruction)
	87.61.Jc	(Anatomic imaging)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61671026) and the Natural Science Foundation of Beijing, China (Grant No. 7162112).

Corresponding Authors: Song Gao
E-mail: gaoss@pku.edu.cn

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

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