.png){kind=icon}
返回
Accelerated Multi-Shot Diffusion Imaging
.png){kind=icon}
OA
AI
DOI：10.1002/mrm.24919.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Purpose: To reduce image distortion in MR diffusion imaging using an accelerated multi-shot method. Methods: The proposed method exploits the fact that diffusion-encoded data tend to be sparse when represented in the k(b)-k(d) space, where k(b) and k(d) are the Fourier transform duals of b and d, the b-factor and the diffusion direction, respectively. Aliasing artifacts are displaced toward under-used regions of the k(b)-k(d) plane, allowing nonaliased signals to be recovered. A main characteristic of the proposed approach is how thoroughly the navigator information gets used during reconstruction: The phase of navigator images is used for motion correction, while the magnitude of the navigator signal in k(b)-k(d) space is used for regularization purposes. As opposed to most acceleration methods based on compressed sensing, the proposed method reduces the number of k(y) lines needed for each diffusion-encoded image, but not the total number of images required. Consequently, it tends to be most effective at reducing image distortion rather than reducing total scan time. Results: Results are presented for three volunteers with acceleration factors ranging from 4 to 8, with and without the inclusion of parallel imaging. Conclusion: An accelerated motion-corrected diffusion imaging method was introduced that achieves good image quality at relatively high acceleration factors. (C) 2013 Wiley Periodicals, Inc.
Keyword:
diffusion imaging
accelerated imaging
navigator echoes
multi-shot EPI
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3
论文数:
1.2W
被引数:
3.1W
机构
引用论文
k-t BLAST and k-t SENSE:: Dynamic MRI with high frame rate exploiting spatiotemporal correlationsOAAI
OAAI分享收藏Mutations in yeast mt tRNAs: Specific and general suppression by nuclear encoded tRNA interactors.png)
Gene
GeneIF0
PREAI
分享收藏分享收藏
查看更多内容