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Dose levels and reconstruction kernels for unenhanced CT examinations used in this study.
| Tube Current Setting (effective mAs) |
CTDIvol (mGy) |
Reconstruction Kernel (Type*, Strength) |
|---|---|---|
| 250 eff. mAs | 38.1 | J40 (IR – 2) |
| 200 eff. mAs | 30.5 | J40 (IR – 2) |
| 100 eff. mAs | 15.2 | J40 (IR – 2) |
| 100 eff. mAs | 15.2 | H40 (FBP) |
| 50 eff. mAs | 7.6 | J40 (IR – 2) |
| 50 eff. mAs | 7.6 | H40 (FBP) |
| 25 eff. mAs | 3.8 | J40 (IR – 2) |
FBP = filtered back projection; IR = iterative reconstruction; eff. mAs = effective mAs
