PET/CT Scanners: Main Technical Parameters Relative to CT Scanners Used (Factory Data)
| Parameter | Philips GEMINI | CTI REVEAL/CPS BIOGRAPH | General Electric DISCOVERY LS |
|---|---|---|---|
| PET scanner | ALLEGRO | ECAT EXACT HR+ or ECAT ACCEL | ADVANCE Nxi |
| CT scanner | MX 8000 DUAL | SOMATOM EMOTION DUO | LIGHTSPEED PLUS |
| Maximum power (kW) | 60 | 40 | 60 |
| Maximum tube voltage (kV) | 140 | 130 | 140 |
| Maximum tube current (mA) | 500 | 240 | 440 |
| Selectable kV values | 90, 120, 140 | 80, 100, 130 | 80, 100, 120, 140 |
| mA range | 30–500 | 30–240 | 10–440 |
| Heat capacity (MHU) | 6.5 | 3.5 | 6.3 |
| Slices/rotation | 2 | 2 | 4 |
| Slice number × thickness (mm) | 2 × 0.625 (axial only) | ||
| 2 × 0.5 | 2 × 1 | 1 and 4 × 1.25 | |
| 2 × 1 | 2 × 1.5 | 4 × 2.5 | |
| 2 × 2.5 | 2 × 2.5 | 4 × 3.75 | |
| 2 × 5 | 2 × 4 | 4 × 5 | |
| 2 × 8 | 2 × 5 | 2 × 7.5 | |
| 2 × 10 | 2 × 10 | ||
| Pitch minimum | 0.375 | 0.25 | 0.75 |
| Pitch maximum | 2 | 2 | 1.5 |
| Angular speed (s/rotation) | 0.5, 0.75, 1, 1.5, 2 | 0.8, 1, 1.5 | 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4 |
| Maximum scan time (s) | 60 | 100 | 120 |
| Detectors array | 672 × 2 | 672 × 2 | 912 × 16 |
| (1,344 elements) | (1,344 elements) | (14,592 elements) | |
| Transverse FOV (mm) | 500 | 500 | 500 |
MHU = Mega Heat Units.