Table 3.
Discordant cases relative to the reference algorithm (ASP)
| Discordant proportion, % (95% CI) | |||||
|---|---|---|---|---|---|
| 5 mm versus 7 mm | 7 mm versus 7 mm | 9 mm versus 7 mm | 5 mm versus 5 mm | 9 mm versus 9 mm | |
| Strictly 19.5% | |||||
| TOF4/8 | 38 (23.5–52.5) | 2 (0–6.9) | 16 (4.8–27.2) | 6 (0–13.6) | 2 (0–6.9) |
| TOF4/16 | 44 (29.2–58.8) | – | 14 (3.4–24.6) | – | – |
| PSF + TOF2/17 | 12 (2.0–22.0) | 4 (0–10.4) | 12 (2.0–22.0) | 32 (18.1–45.9) | 6 (0–13.6) |
| Q.Clear | 10 (0.7–19.3) | 10 (0.7–19.3) | 26 (12.8–39.2) | 38 (23.5–52.5) | 12 (2.0–22.0) |
| 5% tolerance | |||||
| TOF4/8 | 36 (21.7–50.3) | 0 (0–1.0) | 12 (2.0–22.0) | 4 (0–10.4) | 0 (0–1.0) |
| TOF4/16 | 36 (21.7–50.3) | – | 10 (0.7–19.3) | – | – |
| PSF + TOF2/17 | 10 (0.7–19.3) | 0 (0–1.0) | 8 (0–16.5) | 30 (16.3–43.7) | 0 (0–1.0) |
| Q.Clear | 10 (0.7–19.3) | 6 (0–13.6) | 22 (9.5–34.5) | 36 (21.7–50.3) | 10 (0.7–19.3) |
Proportions of discordantly classified cases among all 50 patients are given in % (95%-confidence interval; 95% CI) for each algorithm relative to the reference algorithm TOF4/16. Different pairs of reconstructed spatial resolution (FWHM) are compared. Missing values reflect pairs of identical datasets. Proportions are provided either for a strict ASP cutoff (high, > 19.5%; low, ≤ 19.5%) or with 5% tolerance (i.e., ASP was also rated concordant if between 18.53% and 20.48%)