TABLE I.
Acquisition parameters for CBCT scans.
| Subjects | Tube voltage (kVp) | Tube current (mA) | Exposure time (ms) | Bowtie filter | Panel position/ collimator | Number of projections |
|---|---|---|---|---|---|---|
| Electron density CT phantom | 120 | 25 | 40 | Yes | M15 | 654 |
| Head phantom | 100 | 10 | 10, 20 | No | S20 | 343 |
| Thorax phantom | 120 | 40, 64 | 40 | Yes | M20 | 342 |
| Abdomen phantom | 120 | 40, 64 | 40 | Yes | M20 | 346 |
| Pelvis phantom | 120 | 40, 64 | 40 | Yes | M20 | 346 |
| Prostate patient | 120 | 64 | 40 | Yes | M15 | 325 |
Note: M15 and M20 = middle panel positions (offset detector; half fan) with 15 and 20 cm collimator size; S20 = small panel position (centered detector; full fan) with 20 cm collimator.