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Jonathan Rafael‐Patiño

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#diffusion models Open access Oct 2026

Exact analytical PGSE signal for diffusion confined to a cylindrical surface using a spectral Laplacian formalism

Abstract Objective. To derive an exact analytical expression for the diffusion MRI signal arising from diffusion confined to a cylindrical surface under finite rectangular pulsed-gradient spin-echo (PGSE) gradients, and to develop computationally efficient strategies for repeated model evaluations. Approach. The Bloch–...

Erick Jorge Canales-Rodríguez, Chantal M. W. Tax, Juan Manuel Górriz et al. · 0 citations
#diffusion models Open access Sep 2026

OCTOPUS: A versatile open-source tool creating realistic numerical brain cells

Brain cell morphology plays a crucial role in function and pathology. Biophysical models of diffusion MRI (dMRI) quantify cell morphology in vivo, enabling the design of novel biomarkers. These models represent cells by simplified geometries, such as spheres and randomly oriented cylinders, for which analytical signal...

Malte Brammerloh, Inès de Riedmatten, Juliette Beaubis et al. · 0 citations

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