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dc.contributor.authorKaushik S.
dc.contributor.authorTsegey T.
dc.contributor.authorBansal A.
dc.contributor.authorSlovak J.
dc.date.accessioned2022-01-13T08:42:39Z
dc.date.available2022-01-13T08:42:39Z
dc.date.issued2021
dc.identifierV3S-354262
dc.identifier.citationKAUSHIK, S., et al. Geodesic ray-tracing in white matter fiber crossing region using decomposition of 4th order tensor. In: Proceedings of SPIE. 17th International Symposium on Medical Information Processing and Analysis, Campinas, 2021-11-17/2021-11-19. Bellingham WA: The International Society for Optical Engineering (SPIE), 2021. p. 228-235. vol. 12088. ISSN 0277-786X. DOI 10.1117/12.2606129.
dc.identifier.issn0277-786X (print)
dc.identifier.urihttp://hdl.handle.net/10467/99057
dc.description.abstractThe streamline methods in Diffusion tensor imaging (DTI) use principal eigenvectors for tracking white matter fibers. In comparison, the geodesics in a multivalued ray-tracing method are closer to the actual underlying white matter fibers. This method provides multiple solutions in the form of geodesics in a Riemannian space. These geodesics are robust in tracking high curvature structures in the presence of noise. In the DTI modality, the 2nd order tensor fails to model the heterogeneous regions, e.g., crossing/merging fibers. Therefore, the ray-tracing method is limited to guide the geodesics in these regions. This work, as a first step, utilizes 4th order tensor approximation for the white matter regions. Subsequently, a non-linear optimization is performed to decompose 4th order tensors into multiple 2nd order tensors keeping their symmetric positive definite property. We are using the initial fiber directions from the diagonal components of the 4th order tensor and use the 4th order tensor decomposition for fiber tracking. The experimental results on synthetic images show that geodesics can traverse in heterogeneous and high curvature structures.eng
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherThe International Society for Optical Engineering (SPIE)
dc.relation.ispartofProceedings of SPIE
dc.subjectHARDIeng
dc.subjecttensorseng
dc.subjectfiber trackingeng
dc.titleGeodesic ray-tracing in white matter fiber crossing region using decomposition of 4th order tensoreng
dc.typestať ve sborníkucze
dc.typeconference papereng
dc.identifier.doi10.1117/12.2606129
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/OPVVV/CZ.02.1.01%2F0.0%2F0.0%2F16_019%2F0000765/CZ/Research Center for Informatics/-
dc.rights.accessopenAccess
dc.type.statusPeer-reviewed
dc.type.versionpublishedVersion
dc.relation.conference17th International Symposium on Medical Information Processing and Analysis


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