Accelerated 3D carotid MRI using compressed sensing and parallel imaging

Otazo, Ricardo; Feng, Li; Lim, Ruth; Duan, Qi; Wiggins, Graham C.; Sodickson, Daniel K.; Kim, Daniel

doi:10.1186/1532-429x-12-s1-p147

Cited by 2 publications

(2 citation statements)

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“…T 2 mapping sequences in carotid plaque have shown the ability to differentiate plaque components [15], which could be used for plaque segmentation and identification of high risk components [13,19]. Whilst compressed sensing [26,27,38,39] and parallel imaging [23,24,26,40] have been introduced for multi-contrast carotid vessel wall imaging, these acceleration techniques have not yet been reported for 3D T 2 mapping.…”

Section: Discussionmentioning

confidence: 99%

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Three-dimensional black-blood T 2 mapping with compressed sensing and data-driven parallel imaging in the carotid artery

Yuan

Usman

Reid³

et al. 2017

Magnetic Resonance Imaging

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Section: Discussionmentioning

confidence: 99%

“…Compressed sensing (CS) is an additional method of scan acceleration [25][26][27], which is based upon the compressibility of the MR data. This method has previously been used in carotid morphological imaging [27].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Three-dimensional black-blood T 2 mapping with compressed sensing and data-driven parallel imaging in the carotid artery

Yuan

Usman

Reid³

et al. 2017

Magnetic Resonance Imaging

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Compressed sensing CPMG with group‐sparse reconstruction for myelin water imaging

Chen

Majumdar

Kozłowski

2013

Magnetic Resonance in Med

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Purpose-Myelin content is a marker for nervous system pathology and is quantifiable by myelin water imaging using multi-echo CPMG sequence, which is inherently slow. One way to accelerate the scan is to utilize compressed sensing. However, reconstructing the images piecemeal by standard compressed sensing methods is not the optimal solution, because it only exploits intraimage spatial redundancy. It does not recognize that the different T2 weighted images are scans of the same anatomical volume and hence correlated. The purpose of this work is to test the feasibility of compressed sensed CPMG with group-sparsity promoting optimization for myelin water imaging.Methods-Group-sparse reconstruction was performed at various simulated and actual undersampling factors for an electronic phantom, ex vivo rat spinal cord, and in vivo rat spinal cord. Normalized mean square error was used as the metric for comparison.Results-For both simulated undersampling and the actual undersampling, the method was found to minimally impact myelin water fraction map quality (normalized mean square error < 0.25) when acceleration factor was below two.Conclusion-Compressed sensed CPMG with group-sparse reconstruction is useful for achieving a shorter scan time than traditionally possible. Keywords myelin water imaging; compressed sensing; image reconstruction; rat spinal cord † Part of this work has been presented at the

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Accelerated 3D carotid MRI using compressed sensing and parallel imaging

Cited by 2 publications

References 4 publications

Three-dimensional black-blood T 2 mapping with compressed sensing and data-driven parallel imaging in the carotid artery

Three-dimensional black-blood T 2 mapping with compressed sensing and data-driven parallel imaging in the carotid artery

Compressed sensing CPMG with group‐sparse reconstruction for myelin water imaging

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