BrainWeb.DIFFUSION

BrainWeb.DIFFUSION = mappingproxy({'CSF': 3e-09, 'grey matter': 8.9e-10, 'white matter': 7e-10, 'glial matter': 8.9e-10, 'connective tissue': 7e-10})

Isotropic diffusion coefficients, in m²/s, of the tissue classes whose water diffusion is measured: the apparent diffusion coefficients of cortical grey matter and of white matter in adults (Helenius et al., AJNR Am J Neuroradiol 23:194, 2002), which glial matter and connective tissue take as BrainWeb gives them those tissues’ relaxation, and that of free water at 37 degrees C for CSF (Holz et al., Phys Chem Chem Phys 2:4740, 2000).