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A PSO-Powell Hybrid Method to Extract Fiber Orientations from ODF
Joint Authors
Wu, Zhanxiong
Yu, Xiaohui
Liu, Yang
Hong, Ming
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-01-21
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
High angular resolution diffusion imaging (HARDI) has opened up new perspectives for the delineation of crossing and branching fiber pathways by orientation distribution function (ODF).
The fiber orientations contained in an imaging voxel are the key factor in tractography.
To extract real fiber orientations from ODF, a hybrid method is proposed for computing the principal directions of ODF by combining the variation of Particle Swarm Optimization (PSO) algorithm with the modified Powell algorithm.
This method is comprised of the global searching ability of PSO and the powerful local optimizing of Powell search.
This combination can guarantee finding all the diffusion directions without applying sliding windows and improve the accuracy and efficiency.
The proposed approach was evaluated on simulated crossing-fiber datasets, Tractometer, and in vivo datasets.
The results show that this method could correctly identify fiber directions under a range of noise levels.
This method was compared with the state-of-the-art methods, such as modified Powell, ball-stick model, and diffusion decomposition, showing that it outperformed them.
As to the multimodal voxels where different fiber populations exist, the proposed approach allows us to improve the estimation accuracy of fiber orientations from ODF.
It can play a significant role in the nerve fiber tracking.
American Psychological Association (APA)
Wu, Zhanxiong& Yu, Xiaohui& Liu, Yang& Hong, Ming. 2018. A PSO-Powell Hybrid Method to Extract Fiber Orientations from ODF. Computational and Mathematical Methods in Medicine،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1132162
Modern Language Association (MLA)
Wu, Zhanxiong…[et al.]. A PSO-Powell Hybrid Method to Extract Fiber Orientations from ODF. Computational and Mathematical Methods in Medicine No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1132162
American Medical Association (AMA)
Wu, Zhanxiong& Yu, Xiaohui& Liu, Yang& Hong, Ming. A PSO-Powell Hybrid Method to Extract Fiber Orientations from ODF. Computational and Mathematical Methods in Medicine. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1132162
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1132162