Table 4. Mean Image Noise by Series.
| With IV Contrast (n=26) | Without IV Contrast (n=24) | Overll cohort | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Location | RD- FBP |
RD- ASIR |
RD- PICCS |
SD- FBP |
RD- FBP |
RD- ASIR |
RD- PICCS |
SD- FBP |
RD- FBP |
RD- ASIR |
RD- PICCS |
SD- FBP |
| Liver | 43.7 | 46.7 | 13 | 24.2 | 79.4 | 60.3 | 14.9 | 33.9 | 60.8 | 46.6 | 13.9 | 28.8 |
| Kidney | 44.5 | 34.9 | 15.2 | 27.3 | 73 | 55.9 | 13.9 | 33.7 | 58.2 | 45.0 | 14.6 | 30.4 |
| Subq fat | 37.9 | 29.5 | 11.5 | 21.6 | 69.1 | 53.7 | 14.5 | 30.3 | 52.9 | 41.1 | 13.0 | 25.8 |
| Muscle | 42.1 | 32.7 | 13.8 | 25.7 | 73 | 55.8 | 14.8 | 33.3 | 56.9 | 43.8 | 14.3 | 29.4 |
| Overall | 42.1 | 36.0 | 13.4 | 24.7 | 73.6 | 56.4 | 14.5 | 32.8 | 57.2 | 44.1 | 13.9 | 28.6 |
Note: All measurements are in Hounsfield Units (HU). Image noise refers to the SD around the mean region of interest attenuation measurement. RD=Reduced dose, FBP=Filtered back projection, ASIR=Adaptive statistical iterative reconstruction, PICCS=Prior image constrained compressed sensing, SD=Standard dose