Ansatte – Københavns Universitet

Structural parcellation of the thalamus using shortest-path tractography

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskningfagfællebedømt

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

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.

OriginalsprogEngelsk
Titel2016 IEEE 13th International Symposium on Biomedical Imaging (ISBI)
Antal sider5
ForlagIEEE
Publikationsdato2016
Sider559-563
Artikelnummer7493330
ISBN (Elektronisk)978-1-4799-2349-6
DOI
StatusUdgivet - 2016
Begivenhed2016 IEEE 13th International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2016 - Prague, Tjekkiet
Varighed: 13 apr. 201616 apr. 2016

Konference

Konference2016 IEEE 13th International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2016
LandTjekkiet
ByPrague
Periode13/04/201616/04/2016

ID: 167122413