Table 4. Weighted κ Statistics for Inter-Reader Agreement of Qualitative Image Quality Scores.
| Reduced FOV | Full FOV | |||
|---|---|---|---|---|
| b = 0 s/mm2 | b = 400 s/mm2 | b = 0 s/mm2 | b = 500 s/mm2 | |
| Anatomic structures | 0.473 (0.352, 0.594) | 0.613 (0.493, 0.732) | 0.561 (0.418, 0.703) | 0.365 (0.219, 0.512) |
| Lesion conspicuity | 0.660 (0.554, 0.767) | 0.355 (0.227, 0.483) | 0.618 (0.511, 0.726) | 0.461 (0.346, 0.576) |
| Artifacts | 0.496 (0.376, 0.616) | 0.388 (0.241, 0.534) | 0.431 (0.284, 0.578) | 0.251 (0.096, 0.405) |
| Total image quality score | 0.543 (0.443, 0.644) | 0.490 (0.386, 0.593) | 0.564 (0.474, 0.654) | 0.382 (0.278, 0.485) |
| Subjective clinical utility | 0.470 (0.312, 0.627) | 0.305 (0.165, 0.445) | ||
Data in parentheses are 95% confidence intervals. FOV = field-of-view