Parameters of the protocols used on the 64-row CT scanner
| Parameter | Noncontrast Head CT Scan | CTP | CTA | |
|---|---|---|---|---|
| Infratentorial | Supratentorial | |||
| Lens protection | No | Yes | Yes | |
| Collimation (mm) | 2 × 4 | 4 × 8 | 0.5 × 64 | |
| Table increment (mm) | 8 mm | 8 mm | None | 20.5 |
| Pitch | 1 | No | 0,614 | |
| Tube current (mAseff) | 375 | 250 | 50 | 150 |
| Tube current (mA) | 250 | 50 | 300 | |
| Voltage (kV) | 120 | 120a | 120 | |
| Rotation time | 1.5 s | 1.0 s | 1 s | 0.5 s |
| Scan length (mm) | 140 | 32 | 340.8 | |
| Total scan time | 24.8 s | 45.7 s | 23 s | |
| Gantry angulation | Yes | Yes | No | |
a The Aquilion 64 scanner at the Department of Radiology, Charité Campus Mitte (Berlin, Germany) was one of the first scanners of this type installed. Due to a technical limitation, this Aquilion 64 scanner does not support CTP with 80 kV. Newer versions of the Aquilion 64 scanner allow performing CTP with 80 kV in the same way as the Aquilion ONE does.