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Article: Spatial resolution dependence of DTI tractography in human occipito-callosal region

TitleSpatial resolution dependence of DTI tractography in human occipito-callosal region
Authors
Issue Date2006
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ynimg
Citation
Neuroimage, 2006, v. 32 n. 3, p. 1243-1249 How to Cite?
AbstractDiffusion tensor imaging (DTI) and fiber tracking have been used to measure the fiber structural connectivity in humans in a non-invasive manner. However, low sensitivity is a principal limitation of these methods, causing a large number of possibly missing fiber tracts (FTs). Here we studied how the spatial resolution affects the sensitivity of the fiber tracing by rescaling data to different resolutions. Our data suggest that the spatial resolution can change the degree of the asymmetric cross-callosal connections in the lower visual field (loVF) compared to the upper visual field (upVF). Among connections from loVF, a larger voxel size resulted in a smaller number of FTs that was not commensurate to the number of seed points, while the number of connections from upVF was not significantly affected by variation in seeding point numbers. We conclude from our study that the spatial resolution of the acquired data will have to be taken into consideration in interpreting DTI fiber tracking data. Our results further suggest that the acquisition resolution of around 2 mm iso-voxel in the conventional DTI scheme can reconstruct the asymmetric upper and lower white matter structure in occipito-callosal region. © 2006 Elsevier Inc. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/150894
ISSN
2015 Impact Factor: 5.463
2015 SCImago Journal Rankings: 4.464
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKim, Men_US
dc.contributor.authorRonen, Ien_US
dc.contributor.authorUgurbil, Ken_US
dc.contributor.authorKim, DSen_US
dc.date.accessioned2012-06-26T06:13:59Z-
dc.date.available2012-06-26T06:13:59Z-
dc.date.issued2006en_US
dc.identifier.citationNeuroimage, 2006, v. 32 n. 3, p. 1243-1249en_US
dc.identifier.issn1053-8119en_US
dc.identifier.urihttp://hdl.handle.net/10722/150894-
dc.description.abstractDiffusion tensor imaging (DTI) and fiber tracking have been used to measure the fiber structural connectivity in humans in a non-invasive manner. However, low sensitivity is a principal limitation of these methods, causing a large number of possibly missing fiber tracts (FTs). Here we studied how the spatial resolution affects the sensitivity of the fiber tracing by rescaling data to different resolutions. Our data suggest that the spatial resolution can change the degree of the asymmetric cross-callosal connections in the lower visual field (loVF) compared to the upper visual field (upVF). Among connections from loVF, a larger voxel size resulted in a smaller number of FTs that was not commensurate to the number of seed points, while the number of connections from upVF was not significantly affected by variation in seeding point numbers. We conclude from our study that the spatial resolution of the acquired data will have to be taken into consideration in interpreting DTI fiber tracking data. Our results further suggest that the acquisition resolution of around 2 mm iso-voxel in the conventional DTI scheme can reconstruct the asymmetric upper and lower white matter structure in occipito-callosal region. © 2006 Elsevier Inc. All rights reserved.en_US
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ynimgen_US
dc.relation.ispartofNeuroImageen_US
dc.subject.meshAdulten_US
dc.subject.meshAlgorithmsen_US
dc.subject.meshCorpus Callosum - Anatomy & Histologyen_US
dc.subject.meshData Interpretation, Statisticalen_US
dc.subject.meshDiffusion Magnetic Resonance Imagingen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshMagnetic Resonance Imagingen_US
dc.subject.meshMaleen_US
dc.subject.meshNeural Pathways - Anatomy & Histologyen_US
dc.subject.meshOccipital Lobe - Anatomy & Histologyen_US
dc.subject.meshVisual Fields - Physiologyen_US
dc.titleSpatial resolution dependence of DTI tractography in human occipito-callosal regionen_US
dc.typeArticleen_US
dc.identifier.emailKim, M:minakim@hku.hken_US
dc.identifier.authorityKim, M=rp00292en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.neuroimage.2006.06.006en_US
dc.identifier.pmid16861009-
dc.identifier.scopuseid_2-s2.0-33748079135en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33748079135&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume32en_US
dc.identifier.issue3en_US
dc.identifier.spage1243en_US
dc.identifier.epage1249en_US
dc.identifier.isiWOS:000240470300033-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridKim, M=8146283400en_US
dc.identifier.scopusauthoridRonen, I=6603852444en_US
dc.identifier.scopusauthoridUgurbil, K=7102722412en_US
dc.identifier.scopusauthoridKim, DS=26637469800en_US

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