DocumentCode :
2116527
Title :
A ray tracing method for geodesic based tractography in diffusion tensor images
Author :
Sepasian, Neda ; Vilanova, Anna ; Florack, Luc ; Romeny, B. M ter Haar
Author_Institution :
Dept. of Biomed. Eng., Eindhoven Univ. of Technol., Eindhoven
fYear :
2008
fDate :
23-28 June 2008
Firstpage :
1
Lastpage :
6
Abstract :
We present multi-valued solution algorithm for geodesic-based fiber tracking in a tensor-warped space given by diffusion tensor imaging data. This technique is based on solving ordinary differential equations describing geodesics by a ray tracing algorithm. The algorithm can capture all possible geodesics connecting two given points instead of a single geodesic captured by Hamilton-Jacobi based algorithms. Once the geodesics have been computed, using suitable connectivity measures, we can choose among all solutions the most likely connection pathways which correspond best to the underlying real fibrous structures. In comparison with other approaches, our algorithm gives the possibility of applying different cost functions in a fast post-processing. Moreover, the algorithm can be used for capturing possible multi-path connections between two points that can happen when, e.g., pathologies are presented. Synthetic second order diffusion tensor data in a two dimensional space are employed to illustrate the potential applications of the algorithm to fiber tracking.
Keywords :
differential equations; differential geometry; image processing; ray tracing; tensors; Hamilton-Jacobi based algorithm; cost function; diffusion tensor images; diffusion tensor imaging data; geodesic based tractography; geodesic-based fiber tracking; multipath connection; multivalued solution algorithm; ordinary differential equations; ray tracing method; synthetic second order diffusion tensor data; tensor-warped space; Biomedical measurements; Cost function; Differential equations; Diffusion tensor imaging; Geophysics computing; Joining processes; Level measurement; Ray tracing; Space technology; Tensile stress; Hamilton-Jacobi equation; diffusion tensor images; fiber tracking; geodesic; ray tracing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Vision and Pattern Recognition Workshops, 2008. CVPRW '08. IEEE Computer Society Conference on
Conference_Location :
Anchorage, AK
ISSN :
2160-7508
Print_ISBN :
978-1-4244-2339-2
Electronic_ISBN :
2160-7508
Type :
conf
DOI :
10.1109/CVPRW.2008.4563002
Filename :
4563002
Link To Document :
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