| Clinical CT-to-density table for 120 kVp and 130 kVp scans | CBCT-to-density step function (CBCT-S Function) | ||
| CT Number | Density (g/cm3) | CT Number | Density (g/cm3) |
| 0 | 0.000 | 0 | 0.000 |
| 31 | 0.001 | 100 | 0.000 |
| 281 | 0.450 | 101 | Lung density |
| 902 | 0.920 | 600 | Lung density |
| 1003 | 1.000 | 601 | 1.000 |
| 1233 | 1.122 | 1500 | 1.000 |
| 2282 | 1.820 | 1501 | 1.630 |
|
|
| 2500 | 1.630 |
|
|
| 2501 | 2.000 |
|
|
| 4000 | 2.000 |