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Hyperspherical von mises-fisher mixture (HvMF) modelling of high angular resolution diffusion MRI
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Bhalerao, Abhir and Westin, Carl-Fredrik (2007) Hyperspherical von mises-fisher mixture (HvMF) modelling of high angular resolution diffusion MRI. In: 10th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI 2007), Brisbane, AUSTRALIA, OCT 29-NOV 02, 2007. Published in: Medical Image Computing and Computer-Assisted Intervention - MICCAI 2007, Pt 1, Proceedings, 4791 pp. 236-243.
Full text not available from this repository.Abstract
A mapping of unit vectors onto a 5D hypersphere is used to model and partition ODFs from HARDI data. This mapping has a number of useful and interesting properties and we make a link to interpretation of the second order spherical harmonic decompositions of HARDI data. The paper presents the working theory and experiments of using a von Mises-Fisher mixture model for directional samples. The MLE of the second moment of the HvMF pdf can also be related to fractional anisotropy. We perform error analysis of the estimation scheme in single and multi-fibre regions and then show how a penalised-likelihood model selection method can be employed to differentiate single and multiple fibre regions.
| Item Type: | Conference Item (UNSPECIFIED) |
|---|---|
| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software |
| Series Name: | LECTURE NOTES IN COMPUTER SCIENCE |
| Journal or Publication Title: | Medical Image Computing and Computer-Assisted Intervention - MICCAI 2007, Pt 1, Proceedings |
| Publisher: | SPRINGER-VERLAG BERLIN |
| ISBN: | 978-3-540-75756-6 |
| ISSN: | 0302-9743 |
| Editor: | Ayache, N and Ourselin, S and Maeder, A |
| Date: | 2007 |
| Volume: | 4791 |
| Number of Pages: | 8 |
| Page Range: | pp. 236-243 |
| Publication Status: | Published |
| Title of Event: | 10th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI 2007) |
| Location of Event: | Brisbane, AUSTRALIA |
| Date(s) of Event: | OCT 29-NOV 02, 2007 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/31029 |
Data sourced from Thomson Reuters' Web of Knowledge
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