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Acquisition parameters of routine and lower-dose CT groups
| Radiation Dose | Reconstruction Technique | CTDIvol(mGy)a | DLP (mGy.cm) | Effective Dose (mSv) |
|---|---|---|---|---|
| Regular dose (175 mAs) | 100% FBP | 66.51 | 1270.34 ± 24.46 | 2.66 ± 0.05 |
| Lower dose (140 mAs) | 100% FBP | 49.7 | 932.25 ± 11.46 | 1.95 ± 0.02 |
| 20% ASIR + 80% FBP | ||||
| 40% ASIR + 60% FBP | ||||
| 60% ASIR + 40% FBP | ||||
| 80% ASIR + 20% FBP | ||||
| 100% ASIR |
Clinical scans were below the recommended ACR levels (CTDIvol) of 75 mGy.20
