[HTML][HTML] Challenges for biophysical modeling of microstructure

IO Jelescu, M Palombo, F Bagnato… - Journal of Neuroscience …, 2020 - Elsevier
The biophysical modeling efforts in diffusion MRI have grown considerably over the past 25
years. In this review, we dwell on the various challenges along the journey of bringing a …

Explainable artificial intelligence for magnetic resonance imaging aging brainprints: Grounds and challenges

IB Galazzo, F Cruciani, L Brusini, A Salih… - IEEE Signal …, 2022 - ieeexplore.ieee.org
Marked changes occur in the brain during people's lives, and individual rates of aging have
revealed pronounced differences, giving rise to subject-specific brainprints that are the …

[HTML][HTML] Neurite Exchange Imaging (NEXI): A minimal model of diffusion in gray matter with inter-compartment water exchange

IO Jelescu, A de Skowronski, F Geffroy, M Palombo… - NeuroImage, 2022 - Elsevier
Biophysical models of diffusion in white matter have been center-stage over the past two
decades and are essentially based on what is now commonly referred to as the “Standard …

[HTML][HTML] Measuring compartmental T2-orientational dependence in human brain white matter using a tiltable RF coil and diffusion-T2 correlation MRI

CMW Tax, E Kleban, M Chamberland, M Baraković… - Neuroimage, 2021 - Elsevier
The anisotropy of brain white matter microstructure manifests itself in orientational-
dependence of various MRI contrasts, and can result in significant quantification biases if …

[HTML][HTML] Diffusion MRI with free gradient waveforms on a high-performance gradient system: Probing restriction and exchange in the human brain

A Chakwizira, A Zhu, T Foo, CF Westin… - NeuroImage, 2023 - Elsevier
The dependence of the diffusion MRI signal on the diffusion time carries signatures of
restricted diffusion and exchange. Here we seek to highlight these signatures in the human …

Time dependence in diffusion MRI predicts tissue outcome in ischemic stroke patients

B Lampinen, J Lätt, J Wasselius… - Magnetic resonance …, 2021 - Wiley Online Library
Purpose Reperfusion therapy enables effective treatment of ischemic stroke presenting
within 4–6 hours. However, tissue progression from ischemia to infarction is variable, and …

[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 …

Metabolic activity diffusion imaging (MADI): I. Metabolic, cytometric modeling and simulations

CS Springer Jr, EM Baker, X Li, B Moloney… - NMR in …, 2023 - Wiley Online Library
Evidence mounts that the steady‐state cellular water efflux (unidirectional) first‐order rate
constant (kio [s− 1]) magnitude reflects the ongoing, cellular metabolic rate of the cytolemmal …

Cellular Exchange Imaging (CEXI): Evaluation of a diffusion model including water exchange in cells using numerical phantoms of permeable spheres

R Gardier, JL Villarreal Haro… - Magnetic …, 2023 - Wiley Online Library
Purpose Biophysical models of diffusion MRI have been developed to characterize
microstructure in various tissues, but existing models are not suitable for tissue composed of …

[HTML][HTML] The direction-dependence of apparent water exchange rate in human white matter

Z Li, Z Pang, J Cheng, YC Hsu, Y Sun, E Özarslan… - NeuroImage, 2022 - Elsevier
Transmembrane water exchange is a potential biomarker in the diagnosis and
understanding of cancers, brain disorders, and other diseases. Filter-exchange imaging …