In vivo assessment of anisotropy of apparent magnetic susceptibility in white matter from a single orientation acquisition
In vivo assessment of anisotropy of apparent magnetic susceptibility in white matter from a single orientation acquisition
复制标题
通过单方向采集对白质表观磁化率各向异性进行体内评估
DOI:
10.1016/j.neuroimage.2021.118442
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发表时间:
2021
期刊:
影响因子:
5.7
通讯作者:
Reichenbach JR
中科院分区:
文献类型:
--
作者:
Sibgatulin R;Güllmar D;Deistung A;Ropele S;Reichenbach JR
Multiple studies have reported a significant dependence of the effective transverse relaxation rate constant (R 2*) and the phase of gradient-echo based (GRE) signal on the orientation of white matter fibres in the human brain. It has also been hypothesized that magnetic susceptibility, as obtained by single-orientation quantitative susceptibility mapping (QSM), exhibits such a dependence. In this study, we investigated this hypothesized relationship in a cohort of healthy volunteers. We show that R 2* follows the predicted orientation dependence consistently across white matter regions, whereas the apparent magnetic susceptibility is related differently to fibre orientation across the brain and often in a complex non-monotonic manner. In addition, we explored the effect of fractional anisotropy measured by diffusion-weighted MRI on the strength of the orientation dependence and observed only a limited influence in many regions. However, with careful consideration of such an impact and the limitations imposed by the ill-posed nature of the dipole inversion process, it is possible to study magnetic susceptibility anisotropy in specific brain regions with a single orientation acquisition.
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影响因子:
3.3
作者:
Xu T;Foxley S;Kleinnijenhuis M;Chen WC;Miller KL
通讯作者:
Miller KL
DOI:
10.1016/j.jmr.2018.04.014
发表时间:
2018-07
期刊:
Journal of magnetic resonance (San Diego, Calif. : 1997)
影响因子:
--
作者:
Yablonskiy DA;Sukstanskii AL
通讯作者:
Sukstanskii AL
DOI:
10.1016/b978-0-12-386908-1.00037-9
发表时间:
2018-11
期刊:
Wiley Series in Probability and Statistics
影响因子:
--
作者:
Bruce E. Blaine
通讯作者:
Bruce E. Blaine
影响因子:
2.9
作者:
Bender, B.;Klose, U.
通讯作者:
Klose, U.
DOI:
--
发表时间:
2011
期刊:
--
影响因子:
--
作者:
F. Schweser;A. Deistung;K. Sommer;J. Reichenbach
通讯作者:
F. Schweser;A. Deistung;K. Sommer;J. Reichenbach