Table 2.
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 |