Rotationally-invariant mapping of scalar and orientational metrics of neuronal microstructure with diffusion MRI.
Rotationally-invariant mapping of scalar and orientational metrics of neuronal microstructure with diffusion MRI.
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DOI:
10.1016/j.neuroimage.2018.03.006
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发表时间:
2018-07-01
期刊:
影响因子:
5.7
通讯作者:
Fieremans E
中科院分区:
文献类型:
--
作者:
Novikov DS;Veraart J;Jelescu IO;Fieremans E
We develop a general analytical and numerical framework for estimating intra- and extra-neurite water fractions and diffusion coefficients, as well as neurite orientational dispersion, in each imaging voxel. By employing a set of rotational invariants and their expansion in the powers of diffusion weighting, we analytically uncover the nontrivial topology of the parameter estimation landscape, showing that multiple branches of parameters describe the measurement almost equally well, with only one of them corresponding to the biophysical reality. A comprehensive acquisition shows that the branch choice varies across the brain. Our framework reveals hidden degeneracies in MRI parameter estimation for neuronal tissue, provides microstructural and orientational maps in the whole brain without constraints or priors, and connects modern biophysical modeling with clinical MRI.
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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:
2.2
作者:
Assaf, Y;Cohen, Y
通讯作者:
Cohen, Y
影响因子:
3.3
作者:
Anderson, AW
通讯作者:
Anderson, AW
影响因子:
4.1
作者:
Farquharson, Shawna;Tournier, J. Donald;Connelly, Alan
通讯作者:
Connelly, Alan
影响因子:
3.3
作者:
Assaf, Y;Freidlin, RZ;Basser, PJ
通讯作者:
Basser, PJ