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. 2021 Oct 16;20:34–39. doi: 10.1016/j.phro.2021.10.001

Table 2.

Final values for the supplied and derived modified RED and mass density curves.

Tissue Class Hounsfield Unit (HU) Relative Electron Density
Relative Mass Density (g/cm3)
Supplied Derived Supplied Derived
Air −1000 0.001 0.001 0.001 0.001
Fat −75 0.950 0.977 0.950 0.991
Muscle/visceral 0 1.017 1.032 1.022 1.046
Trabeculae 204 1.096 1.125 1.143 1.170
Cortical Bone 1170 1.695 1.451 1.823 1.540