Scanning parameters for postoperative unenhanced dual-energy brain CT and follow-up unenhanced brain CT
| DECT | SECT | |
|---|---|---|
| Scanning technique | Spiral | Spiral |
| Scan direction | Caudocranial | Caudocranial |
| kVp | 80/140 | 120 |
| mAs ref | 310/155 | 390 |
| Collimation (mm) | 40 × 0.6 | 128 × 0.6 |
| Rotation time (sec) | 0.5 | 1 |
| Pitch | 0.7 | 0.55 |
| CARE Dose 4Da | On | On |
| CARE-kVa | Not available | Off |
| X-CAREa | Not available | On |
| Kernel | D34f | H40s |
Note:—SECT indicates single-energy CT; ref, reference.
↵a Siemens.