Jesper L.R. Andersson
An integrated approach to correction for off-resonance effects and subject movement in diffusion MR imaging
Andersson, Jesper L.R.; Sotiropoulos, Stamatios N.
Authors
Stamatios N. Sotiropoulos
Abstract
In this paper we describe a method for retrospective estimation and correction of eddy current (EC)-induced distortions and subject movement in diffusion imaging. In addition a susceptibility-induced field can be supplied and will be incorporated into the calculations in a way that accurately reflects that the two fields (susceptibility- and EC-induced) behave differently in the presence of subject movement. The method is based on registering the individual volumes to a model free prediction of what each volume should look like, thereby enabling its use on high b-value data where the contrast is vastly different in different volumes. In addition we show that the linear EC-model commonly used is insufficient for the data used in the present paper (high spatial and angular resolution data acquired with Stejskal–Tanner gradients on a 3 T Siemens Verio, a 3 T Siemens Connectome Skyra or a 7 T Siemens Magnetome scanner) and that a higher order model performs significantly better.
The method is already in extensive practical use and is used by four major projects (the WU-UMinn HCP, the MGH HCP, the UK Biobank and the Whitehall studies) to correct for distortions and subject movement.
Citation
Andersson, J. L., & Sotiropoulos, S. N. (2016). An integrated approach to correction for off-resonance effects and subject movement in diffusion MR imaging. NeuroImage, 125, https://doi.org/10.1016/j.neuroimage.2015.10.019
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 9, 2015 |
Online Publication Date | Oct 20, 2015 |
Publication Date | Jan 15, 2016 |
Deposit Date | Apr 5, 2018 |
Publicly Available Date | Apr 5, 2018 |
Journal | NeuroImage |
Print ISSN | 1053-8119 |
Electronic ISSN | 1095-9572 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 125 |
DOI | https://doi.org/10.1016/j.neuroimage.2015.10.019 |
Keywords | Diffusion; Eddy current; Movement; Susceptibility; Registration |
Public URL | https://nottingham-repository.worktribe.com/output/772525 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S1053811915009209 |
Contract Date | Apr 5, 2018 |
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
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