Structural parcellation of the thalamus using shortest-path tractography

Niklas Kasenburg, Sune Darkner, Ute Hahn, Matthew George Liptrot, Aasa Feragen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

We demonstrate how structural parcellation can be implemented using shortest-path tractography, thereby addressing some of the shortcomings of the conventional approaches. In particular, our algorithm quantifies, via p-values, the confidence that a voxel in the parcellated region is connected to each cortical target region. Calculation of these statistical measures is derived from a rank-based test on the histogram of tract-based scores from all the shortest paths found between the source voxel and each voxel within the target region. Using data from the Human Connectome Project, we show that parcellation of the thalamus results in p-value maps that are spatially coherent across subjects. Comparing to the state-of-the-art parcellation of Behrens et al. [1], we observe some agreement, but the soft segmentation exhibits better stability for voxels connected to multiple target regions.
Original languageEnglish
Title of host publicationProceedings of the 13th International Symposium on Biomedical Imaging (ISBI 2016)
PublisherIEEE
Publication date2016
Pages559-563
ISBN (Print)978-1-4799-2349-6
DOIs
Publication statusPublished - 2016
Event13th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Clarion Congress Hotel, Prague, Czech Republic
Duration: 13 Apr 201616 Apr 2016
Conference number: 13
http://biomedicalimaging.org/2016/
https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html%3FConf_ID%3D31200

Conference

Conference13th IEEE International Symposium on Biomedical Imaging
Number13
LocationClarion Congress Hotel
CountryCzech Republic
CityPrague
Period13/04/201616/04/2016
Internet address
SeriesInternational Symposium on Biomedical Imaging. Proceedings
ISSN1945-7928

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