Modified geodesic ray-tracing for diffusion tensor imaging

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Abstract

In this paper we develop a modified ray-tracing algorithm for geodesic tractography in the context of brain Diffusion Tensor Imaging (DTI). Our technique is based on computing multi-valued geodesics connecting two given points and tracking the evolution of adjacent geodesics. In order to do so we introduce a new Riemannian metric given by the adjugate sharpened diffusion tensor, combined with a constraint on the tracts outcome based on the geodesic deviation. We present tractography results, and compare our method with the existing ray-tracing approach and deterministic streamlining. Our preliminary results show an improved performance of modified ray-tracing regarding false positive fibers. We also show experiments on subcortical short association U-fibers, whose reconstruction is well-known to be hard in a DTI setting.
Original languageEnglish
Title of host publicationInternational Symposium on Biomedical Imaging (ISBI): From Nano to Macro, 13-16 April 2016, Prague, Czech Republic
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages489-493
Number of pages5
ISBN (Electronic)978-1-4799-2349-6
ISBN (Print)978-1-4799-2350-2
DOIs
Publication statusPublished - 2016
Event13th IEEE International Symposium on Biomedical Imaging (ISBI 2016) - Clarion Congress Hotel, Prague, Czech Republic
Duration: 13 Apr 201616 Apr 2016
Conference number: 13
http://biomedicalimaging.org/2016/

Conference

Conference13th IEEE International Symposium on Biomedical Imaging (ISBI 2016)
Abbreviated titleISBI 2016
CountryCzech Republic
CityPrague
Period13/04/1616/04/16
Other"From Nano to Macro"
Internet address

Fingerprint

Diffusion tensor imaging
Ray tracing
Fibers
Tensors
Brain
Experiments

Cite this

Sepasian, N., ten Thije Boonkkamp, J. H. M., Astola, L. J., Breeuwer, M., & Fuster, A. (2016). Modified geodesic ray-tracing for diffusion tensor imaging. In International Symposium on Biomedical Imaging (ISBI): From Nano to Macro, 13-16 April 2016, Prague, Czech Republic (pp. 489-493). Piscataway: Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ISBI.2016.7493314
Sepasian, N. ; ten Thije Boonkkamp, J.H.M. ; Astola, L.J. ; Breeuwer, M. ; Fuster, A. / Modified geodesic ray-tracing for diffusion tensor imaging. International Symposium on Biomedical Imaging (ISBI): From Nano to Macro, 13-16 April 2016, Prague, Czech Republic. Piscataway : Institute of Electrical and Electronics Engineers, 2016. pp. 489-493
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abstract = "In this paper we develop a modified ray-tracing algorithm for geodesic tractography in the context of brain Diffusion Tensor Imaging (DTI). Our technique is based on computing multi-valued geodesics connecting two given points and tracking the evolution of adjacent geodesics. In order to do so we introduce a new Riemannian metric given by the adjugate sharpened diffusion tensor, combined with a constraint on the tracts outcome based on the geodesic deviation. We present tractography results, and compare our method with the existing ray-tracing approach and deterministic streamlining. Our preliminary results show an improved performance of modified ray-tracing regarding false positive fibers. We also show experiments on subcortical short association U-fibers, whose reconstruction is well-known to be hard in a DTI setting.",
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Sepasian, N, ten Thije Boonkkamp, JHM, Astola, LJ, Breeuwer, M & Fuster, A 2016, Modified geodesic ray-tracing for diffusion tensor imaging. in International Symposium on Biomedical Imaging (ISBI): From Nano to Macro, 13-16 April 2016, Prague, Czech Republic. Institute of Electrical and Electronics Engineers, Piscataway, pp. 489-493, 13th IEEE International Symposium on Biomedical Imaging (ISBI 2016), Prague, Czech Republic, 13/04/16. https://doi.org/10.1109/ISBI.2016.7493314

Modified geodesic ray-tracing for diffusion tensor imaging. / Sepasian, N.; ten Thije Boonkkamp, J.H.M.; Astola, L.J.; Breeuwer, M.; Fuster, A.

International Symposium on Biomedical Imaging (ISBI): From Nano to Macro, 13-16 April 2016, Prague, Czech Republic. Piscataway : Institute of Electrical and Electronics Engineers, 2016. p. 489-493.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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AB - In this paper we develop a modified ray-tracing algorithm for geodesic tractography in the context of brain Diffusion Tensor Imaging (DTI). Our technique is based on computing multi-valued geodesics connecting two given points and tracking the evolution of adjacent geodesics. In order to do so we introduce a new Riemannian metric given by the adjugate sharpened diffusion tensor, combined with a constraint on the tracts outcome based on the geodesic deviation. We present tractography results, and compare our method with the existing ray-tracing approach and deterministic streamlining. Our preliminary results show an improved performance of modified ray-tracing regarding false positive fibers. We also show experiments on subcortical short association U-fibers, whose reconstruction is well-known to be hard in a DTI setting.

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Sepasian N, ten Thije Boonkkamp JHM, Astola LJ, Breeuwer M, Fuster A. Modified geodesic ray-tracing for diffusion tensor imaging. In International Symposium on Biomedical Imaging (ISBI): From Nano to Macro, 13-16 April 2016, Prague, Czech Republic. Piscataway: Institute of Electrical and Electronics Engineers. 2016. p. 489-493 https://doi.org/10.1109/ISBI.2016.7493314