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R. Oliveira

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Open access Oct 2026

Validating the neurite exchange imaging (NEXI) model of gray matter using Monte Carlo simulations in numerical substrates

Abstract NEXI is a gray matter (GM) microstructural model designed to probe brain tissue microstructure in vivo using diffusion MRI. NEXI describes GM as two exchanging Gaussian compartments—neurites, modeled as randomly oriented, infinitely long sticks, and the extracellular space—allowing the estimation of biophysica...

R. Oliveira, Jasmine Nguyen-Duc, Malte Brammerloh et al. · 0 citations

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