Table 1 Exposure parameters of the CBCT and MSCT scanners and conventional X-ray devices
Siemens | NewTom 5G | Planmed | Shimadzu | |||
|---|---|---|---|---|---|---|
Somatom | CBCT | Planmed | FH-21 HR | |||
Definition AS+ | Hi Res | Standard | Standard | Verity | AP + LAT | |
MSCT | “12 × 8” | “15 × 12” | “18 × 16” | CBCT | Radiography | |
Potential (kV) | 120 | 110 | 110 | 110 | 90 | 57 |
Tube current (mA)‡ | 54 | 11 | 1,5 | 0,6 | 8 | - |
Exposure time (s) | 1.0 | 5,4 | 3,6 | 3,6 | 6 | - |
Q (mAs) | 54 | 59 | 5,3 | 2,3 | 48 | 16 |
Slice thickness (mm) | 0.6 | - | - | - | - | - |
Pitch (mm) | 0.5 | - | - | - | - | - |
Voxel H (mm) | - | 0.15 | 0.3 | 0.3 | 0.2 | - |
Voxel L (mm) | - | 0.15 | 0.3 | 0.3 | 0.2 | - |
Voxel W (mm) | - | 0.15 | 0.3 | 0.3 | 0.2 | - |
Scan angle | 360° | 360° | 360° | 360° | 210° | - |
Frame number | - | 360 | 360 | 360 | 300 | - |
Scan FOV (mm)† | 130 × 160 | 120 × 80 | 150 × 120 | 180 × 160 | 130 × 160 | 130 × 160 |