Accelerated MR Diffusion Tensor Imaging Using Distributed Compressed Sensing

	Accelerated MR Diffusion Tensor Imaging Using Distributed Compressed Sensing
	Wu Yin; Zhu Yan-Jie; Tang Qiu-Yang; Zou Chao; Liu Wei; Dai Rui-Bin; Liu Xin; Wu Ed X.; Ying Leslie; Liang Dong
刊名	MAGNETIC RESONANCE IN MEDICINE
	2014
英文摘要	PurposeDiffusion tensor imaging (DTI) is known to suffer from long acquisition time in the orders of several minutes or even hours. Therefore, a feasible way to accelerate DTI data acquisition is highly desirable. In this article, the feasibility and efficacy of distributed compressed sensing to fast DTI is investigated by exploiting the joint sparsity prior in diffusion-weighted images. MethodsFully sampled DTI datasets were obtained from both simulated phantom and experimental heart sample, with diffusion gradient applied in six directions. The k-space data were undersampled retrospectively with acceleration factors from 2 to 6. Diffusion-weighted images were reconstructed by solving an l(2)-l(1) norm minimization problem. Reconstruction performance with varied signal-to-noise ratio and acceleration factors were evaluated by root-mean-square error and maps of reconstructed DTI indices. ResultsSuperiority of distributed compressed sensing over basic compressed sensing was confirmed with simulation, and the reconstruction accuracy was influenced by signal-to-noise ratio and acceleration factors. Experimental results demonstrate that DTI indices including fractional anisotropy, mean diffusivities, and orientation of primary eigenvector can be obtained with high accuracy at acceleration factors up to 4. ConclusionDistributed compressed sensing is shown to be able to accelerate DTI and may be used to reduce DTI acquisition time practically.
收录类别	SCI
原文出处	http://onlinelibrary.wiley.com/doi/10.1002/mrm.24721./abstract
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/5760]
专题	深圳先进技术研究院_医工所
作者单位	MAGNETIC RESONANCE IN MEDICINE
推荐引用方式 GB/T 7714	Wu Yin,Zhu Yan-Jie,Tang Qiu-Yang,et al. Accelerated MR Diffusion Tensor Imaging Using Distributed Compressed Sensing[J]. MAGNETIC RESONANCE IN MEDICINE,2014.
APA	Wu Yin.,Zhu Yan-Jie.,Tang Qiu-Yang.,Zou Chao.,Liu Wei.,...&Liang Dong.(2014).Accelerated MR Diffusion Tensor Imaging Using Distributed Compressed Sensing.MAGNETIC RESONANCE IN MEDICINE.
MLA	Wu Yin,et al."Accelerated MR Diffusion Tensor Imaging Using Distributed Compressed Sensing".MAGNETIC RESONANCE IN MEDICINE (2014).