Table 2.
Image noise and subjective image quality
| Protocol | Reconstruction | Image noise | p-value | Subjective image quality |
|
|---|---|---|---|---|---|
| Reader 1 | Reader 2 | ||||
| Standard | FBP | 177 (155–193) | p < 0.001 | 3 | 3 |
| ADMIRE 3 | 99 (86–109) | 4 | 4 | ||
| ADMIRE 5 | 48 (42–52) | 5 | 5 | ||
| 1/8 standard dose | FBP | 313 (297–320) | p < 0.001 | 4 | 4 |
| ADMIRE 3 | 182 (176–187) | 4 | 4 | ||
| ADMIRE 5 | 89 (88–91) | 5 | 5 | ||
| 1/20 standard dose | FBP | 314 (305–321) | p < 0.001 | 2 | 2 |
| ADMIRE 3 | 186 (181–192) | 3 | 3 | ||
| ADMIRE 5 | 93 (88–97) | 3 | 3 | ||
| 1/70 standard dose | FBP | 314 (305–321) | p < 0.001 | 2 | 2 |
| ADMIRE 3 | 196 (181–218) | 3 | 3 | ||
| ADMIRE 5 | 113 (100–133) | 3 | 3 | ||
ADMIRE, advanced modelled iterative reconstruction; FBP, filtered back projection.
Image quality rated on a 5-point Likert scale.
Ranges are displayed in parentheses.