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Comparative mouse brain tractography of diffusion magnetic resonance imaging.

Abstract：

:Diffusion magnetic resonance imaging (dMRI) tractography can be employed to simultaneously analyze three-dimensional white matter tracts in the brain. Numerous methods have been proposed to model diffusion-weighted magnetic resonance data for tractography, and we have explored the functionality of some of these for studying white and grey matter pathways in ex vivo mouse brain. Using various deterministic and probabilistic algorithms across a range of regions of interest we found that probabilistic tractography provides a more robust means of visualizing both white and grey matter pathways than deterministic tractography. Importantly, we demonstrate the sensitivity of probabilistic tractography profiles to streamline number, step size, curvature, fiber orientation distribution threshold, and wholebrain versus region of interest seeding. Using anatomically well-defined corticothalamic pathways, we show how projection maps can permit the topographical assessment of probabilistic tractography. Finally, we show how different tractography approaches can impact on dMRI assessment of tract changes in a mouse deficient for the frontal cortex morphogen, fibroblast growth factor 17. In conclusion, probabilistic tractography can elucidate the phenotypes of mice with neurodegenerative or neurodevelopmental disorders in a quantitative manner.

journal_name

Neuroimage

journal_title

NeuroImage

authors

Moldrich RX,Pannek K,Hoch R,Rubenstein JL,Kurniawan ND,Richards LJ

doi

10.1016/j.neuroimage.2010.03.035

subject

Has Abstract

pub_date

2010-07-01 00:00:00

pages

1027-36

issue

3

eissn

1053-8119

issn

1095-9572

pii

S1053-8119(10)00322-8

journal_volume

51

pub_type

杂志文章

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