Table 1 Calibration of virtual non-calcium images and measurement of spectral separation
Tube-voltage combination | Yellow marrow low kV (HU) | Yellow marrow high kV (HU) | Red marrow low kV (HU) | Red marrow high kV (HU) | DEratio |
|---|---|---|---|---|---|
70 kV/Sn150 kV | -130 | -81 | 81 | 61 | 2.27 |
80 kV/Sn150 kV | -115 | -80 | 80 | 60 | 1.99 |
90 kV/Sn150 kV | -115 | -82 | 75 | 60 | 1.81 |
100 kV/Sn150 kV | -105 | -81 | 72 | 61 | 1.67 |
80 kV/140 kV | -130 | -98 | 75 | 70 | 1.47 |