Clinical Evaluation of Interrater Agreement and Individual IQ Parameter Rankings
| Highest-ranked reconstruction (% of cases) | Lowest-ranked reconstruction (% of cases) | ||||||
| Parameter | Scorer 1 | Scorer 2 | Scorer 1 | Scorer 2 | Agreement | ĸ (95% confidence interval) | P |
| Overall IQ | B400 (87%) | B400 (73%) | OSEM PSF (100%) | OSEM PSF (100%) | Moderate | 0.43 (0.30–0.55) | <0.001 |
| Background liver | B500 (93%) | B400 (73%) | OSEM PSF (100%) | OSEM PSF (100%) | Moderate | 0.60 (0.47–0.72) | <0.001 |
| Background mediastinum | B500 (93%) | B400 (87%) | OSEM PSF (100%) | OSEM PSF (100%) | Moderate | 0.55 (0.42–0.66) | <0.001 |
| Background marrow | B500 (93%) | B500 (53%) | OSEM PSF (100%) | OSEM PSF (100%) | Substantial | 0.72 (0.61–0.82) | <0.001 |
| Noise level | B500 (93%) | B500 (47%) | OSEM PSF (100%) | OSEM PSF (100%) | Moderate | 0.60 (0.47–0.71) | <0.001 |
| Lesion detectability | B200 (67%) | B200 (73%) | OSEM PSF (53%) | OSEM PSF (67%) | Moderate | 0.59 (0.45–0.70) | <0.001 |