{"id":166,"date":"2017-06-19T13:41:00","date_gmt":"2017-06-19T13:41:00","guid":{"rendered":"https:\/\/mri.sbollmann.net\/?p=166"},"modified":"2020-06-16T01:36:25","modified_gmt":"2020-06-16T01:36:25","slug":"non-linear-realignment-using-minimum-deformation-averaging-for-single-subject-fmri-at-ultra-high-field","status":"publish","type":"post","link":"https:\/\/mri.sbollmann.net\/index.php\/2017\/06\/19\/non-linear-realignment-using-minimum-deformation-averaging-for-single-subject-fmri-at-ultra-high-field\/","title":{"rendered":"Non-linear Realignment Using Minimum Deformation Averaging for Single-subject fMRI at Ultra-high Field"},"content":{"rendered":"\n<p>Motion dominates the contribution to variance in fMRI time series and it is therefore important to account for this variability correctly. Currently, most correction schemes use a rigid body realignment procedure, but interactions with magnetic field inhomogeneities and physiological fluctuations lead to non-linear deformations. Non-linear realignment increased spatial resolution by harvesting sub-voxel shift information with little impact on tSNR. Activated regions showed a better delineation with a clear match to anatomical features. Importantly, our proposed method can be applied to already acquired fMRI data sets to improve spatial conspicuity. This work was accepted at ISMRM 2017 \ud83d\ude42<\/p>\n\n\n\n<p>The code can be found here: <a href=\"https:\/\/github.com\/CAISR\/volgenmodel-nipype\">https:\/\/github.com\/CAISR\/volgenmodel-nipype<\/a><\/p>\n\n\n<a href=\"https:\/\/mri.sbollmann.net\/wp-content\/uploads\/2020\/06\/MinimumDeformationAveraging-fMRI.pdf\" class=\"pdfemb-viewer\" style=\"\" data-width=\"max\" data-height=\"max\" data-toolbar=\"bottom\" data-toolbar-fixed=\"off\">MinimumDeformationAveraging-fMRI<\/a>\n<p class=\"wp-block-pdfemb-pdf-embedder-viewer\"><\/p>\n\n\n\n<div class=\"wp-block-file\"><a href=\"https:\/\/mri.sbollmann.net\/wp-content\/uploads\/2020\/06\/MinimumDeformationAveraging-fMRI.pdf\">MinimumDeformationAveraging-fMRI<\/a><a href=\"https:\/\/mri.sbollmann.net\/wp-content\/uploads\/2020\/06\/MinimumDeformationAveraging-fMRI.pdf\" class=\"wp-block-file__button\" download>Download<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Motion dominates the contribution to variance in fMRI time series and it is therefore important to account for this variability correctly. Currently, most correction schemes use a rigid body realignment procedure, but interactions with magnetic field inhomogeneities and physiological fluctuations lead to non-linear deformations. Non-linear realignment increased spatial resolution by [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":168,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,20,18,21,4,15],"tags":[],"class_list":["post-166","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-code","category-conferences","category-functional-imaging","category-minimum-deformation-averaging","category-python","category-ultra-high-field"],"jetpack_featured_media_url":"https:\/\/mri.sbollmann.net\/wp-content\/uploads\/2020\/06\/image-8.png","_links":{"self":[{"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/posts\/166","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/comments?post=166"}],"version-history":[{"count":3,"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/posts\/166\/revisions"}],"predecessor-version":[{"id":240,"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/posts\/166\/revisions\/240"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/media\/168"}],"wp:attachment":[{"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/media?parent=166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/categories?post=166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mri.sbollmann.net\/index.php\/wp-json\/wp\/v2\/tags?post=166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}