Towards unconstrained compartment modeling in white matter using diffusion‐relaxation MRI with tensor‐valued diffusion encoding

B Lampinen, F Szczepankiewicz… - Magnetic resonance …, 2020 - Wiley Online Library
Purpose To optimize diffusion‐relaxation MRI with tensor‐valued diffusion encoding for
precise estimation of compartment‐specific fractions, diffusivities, and T2 values within a two …

Anomalous diffusion, nonergodicity, and ageing for exponentially and logarithmically time-dependent diffusivity: striking differences for massive versus massless …

AG Cherstvy, H Safdari, R Metzler - Journal of Physics D: Applied …, 2021 - iopscience.iop.org
Anomalous diffusion, nonergodicity, and ageing for exponentially and logarithmically time-dependent
diffusivity: striking differences for massive versus massless particles - IOPscience This site …

[HTML][HTML] ConFiG: Contextual Fibre Growth to generate realistic axonal packing for diffusion MRI simulation

R Callaghan, DC Alexander, M Palombo, H Zhang - Neuroimage, 2020 - Elsevier
Abstract This paper presents Contextual Fibre Growth (ConFiG), an approach to generate
white matter numerical phantoms by mimicking natural fibre genesis. ConFiG grows fibres …

Random walk simulations of diffusion in human brain white matter from 3d EM validate diffusion time-dependence transverse and parallel to axons

HH Lee, Q Tian, C Ngamsombat… - 28th Annual Meeting …, 2020 - archive.ismrm.org
We perform for the first time Monte Carlo simulations inside realistic human intra-axonal
space segmented from electron microscopy. We observe non-Gaussian time-dependent …

Characterizing white matter lesions in multiple sclerosis with time-dependent diffusion MRI reveals the signature of axonal beading

HH Lee, DS Novikov, E Fieremans - archive.ismrm.org
We observe diffusivity time-dependence along white matter axons in normal-appearing
white matter (NAWM) and lesions in 5 relapse remitting multiple sclerosis (MS) patients. The …