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Magn Reson Med Sci. 2018 Dec 3. doi: 10.2463/mrms.tn.2018-0095. [Epub ahead of print]

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

Author information

1
Department of Radiology, Koshigaya Municipal Hospital.
2
Department of Radiology, Juntendo University School of Medicine.
3
Department of Radiology, Graduate School of Medicine, The University of Tokyo.
4
Siemens-healthcare Japan.

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.

KEYWORDS:

diffusion-weighted magnetic resonance imaging; dynamic field correction; echo-planar imaging; eddy current

PMID:
30504640
DOI:
10.2463/mrms.tn.2018-0095
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