CTDIvol and DLP/ED values for whole-brain CTP examinations at 80 kVp and 70 kVp with different scanners
| 70 kVp | 80 kVp | Percentage Reduction | |
|---|---|---|---|
| 100% − (70 kVp/80 kVp) × 100 | |||
| CTDIvol (mGy) | 105 | 192 | 45.31 |
| DLP (mGy·cm) | 1588 | 1831 | 13.27 |
| ED (mSv) | 3.65 | 4.21 | 13.27 |
Note:—ED indicates effective dose.