Quantifying brain microstructure with diffusion MRI: Theory and parameter estimation.
Quantifying brain microstructure with diffusion MRI: Theory and parameter estimation.
复制标题
用扩散MRI量化脑微观结构:理论和参数估计。
DOI:
10.1002/nbm.3998
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发表时间:
2019-04
影响因子:
2.9
通讯作者:
Kiselev VG
中科院分区:
文献类型:
--
作者:
Novikov DS;Fieremans E;Jespersen SN;Kiselev VG
We review, systematize and discuss models of diffusion in neuronal tissue, by putting them into an overarching physical context of coarse-graining over an increasing diffusion length scale. From this perspective, we view research on quantifying brain microstructure as occurring along the three major avenues. The first avenue focusses on the transient, or time-dependent, effects in diffusion. These effects signify the gradual coarse-graining of tissue structure, which occurs qualitatively differently in different brain tissue compartments. We show that the transient effects contain information about the relevant length scales for neuronal tissue, such as the packing correlation length for neuronal fibers, as well as the degree of structural disorder along the neurites. The second avenue corresponds to the long-time limit, when the observed signal can be approximated as a sum of multiple non-exchanging anisotropic Gaussian components. Here the challenge lies in parameter estimation and in resolving its hidden degeneracies. The third avenue employs multiple diffusion encoding techniques, able to access information not contained in the conventional diffusion propagator. We conclude with our outlook on the future directions which can open exciting possibilities for designing quantitative markers of tissue physiology and pathology, based on methods of studying mesoscopic transport in disordered systems.
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影响因子:
2.9
作者:
Ackerman, Joseph J. H.;Neil, Jeffrey J.
通讯作者:
Neil, Jeffrey J.
DOI:
10.1006/jmrb.1994.1037
发表时间:
1994-03-01
期刊:
JOURNAL OF MAGNETIC RESONANCE SERIES B
影响因子:
--
作者:
BASSER, PJ;MATTIELLO, J;LEBIHAN, D
通讯作者:
LEBIHAN, D
影响因子:
8.3
作者:
Baron, Corey Allan;Kate, Mahesh;Beaulieu, Christian
通讯作者:
Beaulieu, Christian
影响因子:
56.9
作者:
ANDERSON, PW
通讯作者:
ANDERSON, PW
影响因子:
3.3
作者:
Anderson, AW
通讯作者:
Anderson, AW