An Image Registration-Based Method for EPI Distortion Correction Based on Opposite Phase Encoding (COPE)

被引：8

作者：

Breman, Hester ^{[1
,2
]}

Mulders, Joost ^{[1
]}

Fritz, Levin ^{[1
]}

Peters, Judith ^{[2
,3
,4
]}

Pyles, John ^{[5
]}

Eck, Judith ^{[1
,2
]}

Bastiani, Matteo ^{[6
,7
,8
]}

Roebroeck, Alard ^{[2
]}

Ashburner, John ^{[9
]}

Goebel, Rainer ^{[1
,2
]}

机构：

[1] Brain Innovat, Maastricht, Netherlands

[2] Maastricht Univ, Fac Psychol & Neuroscience, Dept Cognit Neuroscience, Maastricht, Netherlands

[3] Maastricht Univ, Maastricht Brain Imaging Ctr, Maastricht, Netherlands

[4] Royal Netherlands Acad Arts & Sci KNAW, Netherlands Inst Neuroscience, Dept Vision & Cognit, Amsterdam, Netherlands

[5] Carnegie Mellon Univ, Ctr Neural Basis Cognit, Pittsburgh, PA USA

[6] Univ Nottingham, Sch Med, Sir Peter Mansfield Imaging Ctr, Nottingham, England

[7] Univ Nottingham, NIHR Biomed Res Ctr, Nottingham, England

[8] Univ Oxford, Wellcome Ctr Integrat Neuroimaging, Oxford, England

[9] UCL, Wellcome Ctr Human Neuroimaging, London, England

来源：

BIOMEDICAL IMAGE REGISTRATION (WBIR 2020) | 2020年 / 12120卷

关键词：

Image registration; Susceptibility distortion correction; ECHO-PLANAR IMAGES;

D O I：

10.1007/978-3-030-50120-4_12

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Surprisingly, estimated voxel displacement maps (VDMs), based on image registration, seem to work just as well to correct geometrical distortion in functional MRI data (EPI) as VDMs based on actual information about the magnetic field. In this article, we compare our new image registration-based distortion correction method 'COPE' to an implementation of the pixel-shift method. Our approach builds on existing image registration-based techniques using opposite phase encoding, extending these by local cost aggregation. Comparison of these methods with 3T and 7T spin-echo (SE) and gradient-echo (GE) data show that the image registration-based method is a good alternative to the fieldmap-based EPI distortion correction method.

引用

页码：122 / 130

页数：9

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