Reduction of distortion artifacts in brain MRI using a field map-based correction technique in diffusion-weighted imaging : a prospective study

dc.contributor.authorGrauhan, Nils F.
dc.contributor.authorGrünebach, Natascha
dc.contributor.authorBrockstedt, Lavinia
dc.contributor.authorSanner, Antoine
dc.contributor.authorFeiweier, Thorsten
dc.contributor.authorSchöffling, Vanessa
dc.contributor.authorBrockmann, Marc A.
dc.contributor.authorOthman, Ahmed E.
dc.date.accessioned2024-01-16T08:20:57Z
dc.date.available2024-01-16T08:20:57Z
dc.date.issued2023
dc.description.abstractPurpose The aim of this study was to evaluate the image quality and feasibility of a field map-based technique to correct for susceptibility-induced geometric distortions which are typical for diffusion EPI brain imaging. Methods We prospectively included 52 patients during clinical routine in this single-center study. All scans were performed on a 3T MRI. Patients’ indications for MRI mainly consisted of suspected stroke due to the clinical presentation. For the morphological comparison of the corrected and uncorrected EPI diffusion, three experienced radiologists assessed the image quality of the sequences in a blinded and randomized fashion using a Likert scale (1 being poor; 5 being excellent). To ensure comparability of the two methods, an additional quantitative analysis of the apparent diffusion coefficient (ADC) was performed. Results Corrected EPI diffusion was rated significantly superior in all the selected categories: overall level of artifacts (p < 0.001), degree of distortion at the frontal, temporal, occipital and brainstem levels (p < 0.001), conspicuousness of ischemic lesions (p < 0.001), image quality (p < 0.001), naturality (p < 0.001), contrast (p < 0.001), and diagnostic confidence (p < 0.001). Conclusion Corrected EPI diffusion offers a significant reduction of geometric distortion in all evaluated brain regions and an improved conspicuousness of ischemic lesions. Image quality, overall artifacts, naturality, contrast and diagnostic confidence were also rated superior in comparison to uncorrected EPI diffusion.en_GB
dc.identifier.doihttp://doi.org/10.25358/openscience-9833
dc.identifier.urihttps://openscience.ub.uni-mainz.de/handle/20.500.12030/9851
dc.language.isoengde
dc.rightsCC-BY-4.0*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subject.ddc610 Medizinde_DE
dc.subject.ddc610 Medical sciencesen_GB
dc.titleReduction of distortion artifacts in brain MRI using a field map-based correction technique in diffusion-weighted imaging : a prospective studyen_GB
dc.typeZeitschriftenaufsatzde
jgu.journal.titleClinical neuroradiologyde
jgu.journal.volumeVersion of Record (VoR)de
jgu.organisation.departmentFB 04 Medizinde
jgu.organisation.nameJohannes Gutenberg-Universität Mainz
jgu.organisation.number2700
jgu.organisation.placeMainz
jgu.organisation.rorhttps://ror.org/023b0x485
jgu.publisher.doi10.1007/s00062-023-01338-3de
jgu.publisher.issn1869-1447de
jgu.publisher.nameUrban & Vogel,de
jgu.publisher.placeMünchende
jgu.publisher.year2023
jgu.rights.accessrightsopenAccess
jgu.subject.ddccode610de
jgu.subject.dfgLebenswissenschaftende
jgu.type.dinitypeArticleen_GB
jgu.type.resourceTextde
jgu.type.versionPublished versionde

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