Four in vivo g‐ratio‐weighted imaging methods: Comparability and repeatability at the group level

I Ellerbrock, S Mohammadi - 2018 - Wiley Online Library
… we will use from now on the term “g-ratio weighted imaging” as suggested by [Campbell et
al… The calibration procedure plays a critical role for group comparison studies. For example, in …

[HTML][HTML] Towards in vivo g-ratio mapping using MRI: Unifying myelin and diffusion imaging

S Mohammadi, MF Callaghan - Journal of neuroscience methods, 2021 - Elsevier
… the potential of in vivo g-ratio weighted imaging for a variety of … To facilitate modelling, brain
tissue is decomposed into four … stable in terms of repeatability and comparability than F V F …

[HTML][HTML] Whole-Brain In-vivo Measurements of the Axonal G-Ratio in a Group of 37 Healthy Volunteers

S Mohammadi, D Carey, F Dick, J Diedrichsen… - Frontiers in …, 2015 - frontiersin.org
… and made comparisons with ex-vivo measurements of the … time per slice = 170 ms (volume
repetition time TR = 10.2 s), total … These g-ratio weighted connectivity maps may inform brain …

[HTML][HTML] Longitudinal microstructural MRI markers of demyelination and neurodegeneration in early relapsing-remitting multiple sclerosis: Magnetisation transfer …

EN York, R Meijboom, MJ Thrippleton, ME Bastin… - NeuroImage: Clinical, 2022 - Elsevier
… in early RRMS is limited by technique reproducibility. … This study aims to evaluate in vivo
markers of microstructural … (FDR) correction for multiple comparisons was performed for linear …

… transfer, diffusion and g-ratio measures of demyelination and neurodegeneration in early relapsing-remitting multiple sclerosis: a longitudinal microstructural MRI …

EN York, R Meijboom, MJ Thrippleton, ME Bastin… - medRxiv, 2022 - medrxiv.org
… confounding factors and multiple comparisons. Longitudinal changes … in early RRMS is limited
by technique reproducibility. … This study aims to evaluate in vivo markers of microstructural …

MRI-derived g-ratio and lesion severity in newly diagnosed multiple sclerosis

EN York, SJ Martin, R Meijboom… - Brain …, 2021 - academic.oup.com
imaging and ultrasensitive protein detection technologies offer new opportunities for quantified
in vivo … Plasma neurofilament levels were measured using a NF-light assay (4-PLEX ‘A’ …

[HTML][HTML] The influence of radio-frequency transmit field inhomogeneities on the accuracy of G-ratio weighted imaging

TM Emmenegger, G David, M Ashtarayeh… - Frontiers in …, 2021 - frontiersin.org
G-ratio weighted imaging is a non-invasive, in-vivo MRI-… 4 ms duration and a nominal flip
angle of 220). All other sequence parameters were the same for the three sequences: repetition

[HTML][HTML] Estimating axon conduction velocity in vivo from microstructural MRI

M Drakesmith, R Harms, SU Rudrapatna, GD Parker… - Neuroimage, 2019 - Elsevier
… The AIC and BIC were comparable to the Rushton model. … 3) images distributed across 8
flip angles and 4 phase cycle … For all simulated acquisition and permutations of noise levels, …

Evaluating g-ratio weighted changes in the corpus callosum as a function of age and sex

S Berman, KL West, MD Does, JD Yeatman, AA Mezer - Neuroimage, 2018 - Elsevier
… provides a simple and reliable in vivo g-ratio-weighted (GR*) … To correct for the multiple
(eight) comparisons, we set the … In order to verify the reproducibility of our measurements, we …

Modeling conduction delays in the corpus callosum using MRI-measured g-ratio

S Berman, S Filo, AA Mezer - Neuroimage, 2019 - Elsevier
… a g-ratio weighted measurement in vivo using quantitative MRI… study the between-tract
comparisons largely depend on our … 4, we also find that the velocity might change slightly with age…