T1 relaxometry of crossing fibres in the human brain.
T1 relaxometry of crossing fibres in the human brain.
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DOI:
10.1016/j.neuroimage.2016.07.037
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发表时间:
2016-11-01
期刊:
影响因子:
5.7
通讯作者:
Roebroeck A
中科院分区:
文献类型:
--
作者:
De Santis S;Assaf Y;Jeurissen B;Jones DK;Roebroeck A
A comprehensive tract-based characterisation of white matter should include the ability to quantify myelin and axonal attributes irrespective of the complexity of fibre organisation within the voxel. Recently, a new experimental framework that combines inversion recovery and diffusion MRI, called inversion recovery diffusion tensor imaging (IR-DTI), was introduced and applied in an animal study. IR-DTI provides the ability to assign to each unique fibre population within a voxel a specific value of the longitudinal relaxation time, T1, which is a proxy for myelin content. Here, we apply the IR-DTI approach to the human brain in vivo on 7 healthy subjects for the first time. We demonstrate that the approach is able to measure differential tract properties in crossing fibre areas, reflecting the different myelination of tracts. We also show that tract-specific T1 has less inter-subject variability compared to conventional T1 in areas of crossing fibres, suggesting increased specificity to distinct fibre populations. Finally we show in simulations that changes in myelination selectively affecting one fibre bundle in crossing fibre areas can potentially be detected earlier using IR-DTI. We apply the inversion recovery DTI approach to the human brain in vivo for the first time. We demonstrate that IR-DTI can measure tract-specific T1 in crossing fibres. IR-DTI T1 has less inter-subject variability compared to conventional T1 in crossing fibres. Changes in myelination affecting one fibre in crossing fibres can be detected earlier using IR-DTI.
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影响因子:
5.7
作者:
Dean DC 3rd;O'Muircheartaigh J;Dirks H;Waskiewicz N;Lehman K;Walker L;Han M;Deoni SC
通讯作者:
Deoni SC
影响因子:
3.3
作者:
Deoni, Sean C. L.;Rutt, Brian K.;Jones, Derek K.
通讯作者:
Jones, Derek K.
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:
5.7
作者:
Marques, Jose P.;Kober, Tobias;Gruetter, Rolf
通讯作者:
Gruetter, Rolf
影响因子:
4.8
作者:
Jeurissen, Ben;Leemans, Alexander;Sijbers, Jan
通讯作者:
Sijbers, Jan