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一种用于校正扩散加权回波平面图像中涡流和运动引起的扭曲的技术比较。

A Comparison of Techniques for Correcting Eddy-current and Motion-induced Distortions in Diffusion-weighted Echo-planar Images.

机构信息

Department of Radiology, Koshigaya Municipal Hospital.

Department of Radiology, Juntendo University School of Medicine.

出版信息

Magn Reson Med Sci. 2019 Oct 15;18(4):272-275. doi: 10.2463/mrms.tn.2018-0095. Epub 2018 Dec 3.

DOI:10.2463/mrms.tn.2018-0095
PMID:30504640
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6883088/
Abstract

The purpose of this study was to show the efficacy of dynamic field correction (DFC), a technique provided by the scanner software, in comparison to the FMRIB Software Library (FSL) post-processing "eddy" tool. DFC requires minimal additional scan time for the correction of eddy-current and motion-induced geometrical image distortions in diffusion-weighted echo-planar images. The fractional anisotropy derived from images corrected with DFC were comparable to images corrected with the "eddy" tool and significantly higher than images without correction, which demonstrates the utility of DFC.

摘要

本研究旨在展示动态场校正（DFC）的功效，这是扫描仪软件提供的一项技术，与 FMRIB 软件库（FSL）后处理“涡流”工具进行比较。DFC 只需额外扫描少量时间，即可校正扩散加权回波平面图像中的涡流和运动引起的几何图像变形。用 DFC 校正后的各向异性分数与用“涡流”工具校正后的图像相当，明显高于未校正的图像，这证明了 DFC 的实用性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/db2d/6883088/f14d0a5536e9/mrms-18-272-g2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/db2d/6883088/581c10a89e17/mrms-18-272-g1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/db2d/6883088/f14d0a5536e9/mrms-18-272-g2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/db2d/6883088/581c10a89e17/mrms-18-272-g1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/db2d/6883088/f14d0a5536e9/mrms-18-272-g2.jpg

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