Table 1.
The reconstructed volume (in cc) of the targets imaged with CBCT in static and dynamic modes obtained using auto-contouring for WW −500 to 0 and the percentage difference in volume with reference CT respectively.
| Targets | Reconstructed Volume using auto-contouring technique for WW −500 to 0 (in cc) | ||||||
|---|---|---|---|---|---|---|---|
| Reference CT volume | CBCT (static) | Volume difference (%) | CBCT (dynamic PA1) | Volume difference (%) | CBCT (dynamic PA2) | Volume difference (%) | |
| Dumbbell | 43.71 | 42.37 | −3.07 | 31.94 | −26.93 | 25.94 | −40.65 |
| Cylinder | 42.17 | 41.61 | −1.32 | 36.12 | −14.35 | 33.19 | −21.29 |
| U-shape | 38.19 | 35.92 | −5.94 | 27.82 | −27.15 | 22.02 | −42.34 |
| Solid triangle | 26.53 | 25.01 | −5.73 | 18.32 | −30.95 | 14.91 | −43.80 |
| Sphere | 20.68 | 20.13 | −2.66 | 15.65 | −24.32 | 12.24 | −40.81 |