Table 1.
Voltage | 60–90 kVp |
Tube current | 1–8 mA (high-dose mode) |
1–10 mA (low-dose mode) | |
Exposure time | 9.0 s (high-speed mode) |
17.5 s (standard mode) | |
31.0 s (high-dose mode) | |
Exposure type | Continuous |
Focal spot | 0.5 mm |
Filtration | ≥3.1 mm Al |
Beam angle | 5° |
Anode material | Tungsten |
Half-value layer | 60 kVp: 1.9 mmAl |
70 kVp: 2.1 mmAl | |
80 kVp: 2.9 mmAl | |
90 kVp: 3.2 mmAl | |
Field of view size | 4 × 4, 6 × 6, 8 × 8, 10 × 5, 10 × 10, 14 × 5, 14 × 10, 17 × 5 and 17 × 12 cm |
Source-to-isocentre distance | 740–840 mm |
Detector type | CsI-aSi flat panel detector |
Reconstruction algorithm | Feldkamp et al12 |
Al, aluminium.