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. 2021 Nov 17;13(22):5754. doi: 10.3390/cancers13225754

Table 1.

Optical properties at 635 nm for the seven brain tissues considered in the study (issued from references [30,31,32,33,34]). The refractive index (RI) was the same for all subtypes of cerebral tissue (RI = 1.40).

Variable Healthy Parenchyma Tumor
CSF Gray Matter White Matter Necrotic Non-Enhancing Enhancing Oedema
Absorption coefficient (/mm) 0.004 0.13 0.08 0.17 0.08 0.17 0.08
Scattering coefficient (/mm) 0.009 9 40.5 24.1 69.7 24.1 40.5
Anisotropy factor 0.89 0.92 0.85 0.9 0.9 0.9 0.85