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The effects of geometric distortion correction on motion realignment in fMRI1

✍ Scribed by Elliott, Mark A.; Gualtieri, Eugene E.; Hulvershorn, Justin; Ragland, J. Daniel; Gur, Ruben

Book ID
123604795
Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
202 KB
Volume
11
Category
Article
ISSN
1076-6332

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The accuracy of measuring voxel intensity changes between stimulus and rest images in fMRI echo-planar imaging (EPI) data is severely degraded in the presence of head motion. In addition, EPI is sensitive to susceptibility-induced geometric distortions. Head motion causes image shifts and associated