Differences in Acquisition Parameters Between Diagnostic CT and Attenuation-Correction CT for SPECT/CT MPI
| Parameter | Diagnostic CT | Attenuation-correction CT |
| Voltage (kV) | 120 | 120 |
| Tube current (mA) | Automated (∼300–400) | 1.5–33 |
| Rotation time (s) | 0.33 | 1.5–30 |
| Effective mAs | 100–130 (dependent on automated mA) | 24–50 |
| Slice thickness (mm) | ||
| Acquired | 0.5–1 | 5–10 |
| Reconstructed | 3 | 5–10 |
| Pitch | 0.75–1 | 1–2 |