Sample acute stroke protocol for 64-section MDCT scanner: NCCT, vertex-to-arch CTA without cardiac component, and shuttle-mode CTP
| Location | Section Thickness (mm) | Image Spacing (mm) | Pitch | kV | mA | Gantry Rotation Time (s) | Contrast Administration | |
|---|---|---|---|---|---|---|---|---|
| NCCT | C1 to vertex | 5 | 5 | 0.531:1 | 120 | 250 | 0.7 | |
| CTA | Vertex to 1 cm below carina | 1.25 | 0.625 | 0.516:1 | 120 | 200–660 | 0.5 | 4 mL/s; volume, 60-mL contrast |
| Shuttle-mode CTP | Selected by neuroradiologist | 8-cm slab | N/A | N/A | 80 | 500 | 0.4 | 7 mL/s; volume, 45 mL |