Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/80534
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Type: | Journal article |
Title: | MRI diffusion indices sampled along streamline trajectories: quantitative tractography mapping |
Author: | Pannek, K. Mathias, J. Rose, S. |
Citation: | Brain Connectivity, 2011; 1(4):331-338 |
Publisher: | Mary Ann Liebert |
Issue Date: | 2011 |
ISSN: | 2158-0014 2158-0022 |
Statement of Responsibility: | Kerstin Pannek, Jane L. Mathias, and Stephen E. Rose |
Abstract: | Several useful tractography-derived maps have recently been introduced, such as track density imaging (TDI) and the average pathlength map (APM). Here, an extension to these techniques is introduced by sampling diffusion indices along streamline trajectories (DIST). With this approach, voxels contain summary information of diffusivity measures within streamlines. The diffusion metrics can also be used as weighting factors for streamline number or length, generating DIST-weighted TDI and DIST-weighted APM, respectively. Furthermore, when higher-order models of diffusion are used to estimate the fiber orientation distribution within each voxel, it is possible to obtain directional TDI, APM, DIST, and DIST-weighted TDI and APM. The reproducibility of this approach using two b-values (1000 and 3000 s/mm2) and the effect of pathologic abnormalities are demonstrated. |
Keywords: | diffusion magnetic resonance imaging high angular resolution diffusion imaging quantitative tractography white matter |
Description: | This is a copy of an article published in the Brain Connectivity © 2011 Mary Ann Liebert, Inc.; Brain Connectivity is available online at: http://online.liebertpub.com. |
Rights: | © Mary Ann Liebert, inc |
DOI: | 10.1089/brain.2011.0040 |
Published version: | http://dx.doi.org/10.1089/brain.2011.0040 |
Appears in Collections: | Aurora harvest 4 Psychology publications |
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hdl_80534.pdf | Published version | 754.49 kB | Adobe PDF | View/Open |
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