Mapping tissue microstructure in gray matter is becoming an important field of research in diffusion MRI. Previous studies have focused on characterizing different features separately, such as neurite density, branching order or soma size. However, the combined effect of different cell morphologies and sizes on the diffusion MRI signal has not yet been investigated. This work employs numerical simulations in more realistic cell configurations to investigate the effect of soma diameter, branch diameter and branching order, on the dMRI signal and its time dependence.
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