Table 4 Similarity scores of the top 1–5 retrieved computed tomography (CT) images.
Number of retrieval order | CT scans with similarity scores ≥ 4 | Mean similarity score* | ||||
|---|---|---|---|---|---|---|
Reader 1 | Reader 2 | Overall | Reader 1 | Reader 2 | Overall | |
Top 1 | 74.0 (37/50) | 88.0 (44/50) | 81.0 | 4.16 ± 0.15 | 4.34 ± 0.10 | 4.25 ± 0.11 |
(CI 60.2–84.3) | (CI 75.8–94.5) | (CI 70.8–88.3) | (CI 3.87–4.45) | (CI 4.14–4.54) | (CI 4.04–4.46) | |
Top 2 | 64.0 (32/50) | 82.0 (41/50) | 73.0 | 3.74 ± 0.11 | 4.08 ± 0.10 | 3.91 ± 0.09 |
(CI 49.9–76.0) | (CI 68.9–90.4) | (CI 61.9–81.8) | (CI 3.53–3.95) | (CI 3.89–4.27) | (CI 3.74–4.08) | |
Top 3 | 48.0 (24/50) | 82.0 (41/50) | 65.0 | 3.60 ± 0.14 | 4.02 ± 0.09 | 3.81 ± 0.10 |
(CI 34.6–61.7) | (CI 68.9–90.4) | (CI 54.0–74.6) | (CI 3.33–3.87) | (CI 3.84–4.20) | (CI 3.61–4.01) | |
Top 4 | 46.0 (23/50) | 64.0 (32/50) | 55.0 | 3.38 ± 0.13 | 3.80 ± 0.10 | 3.59 ± 0.10 |
(CI 32.8–59.8) | (CI 49.9–76.0) | (CI 43.1–66.4) | (CI 3.12–3.64) | (CI 3.60–4.0) | (CI 3.40–3.78) | |
Top 5 | 34.0 (17/50) | 66.0 (33/50) | 50.0 | 3.24 ± 0.12 | 3.72 ± 0.09 | 3.48 ± 0.09 |
(CI 22.3–48.0) | (CI 52.0–77.7) | (CI 39.1–60.9) | (CI 3.01–3.47) | (CI 3.54–3.90) | (CI 3.31–3.65) | |
Overall | 53.2 | 76.4 | 64.8 | 3.62 ± 0.06 | 3.99 ± 0.05 | 3.81 ± 0.05 |
(CI 46.1–60.2) | (CI 69.5–82.1) | (CI 58.8–70.4) | (CI 3.50–3.75) | (CI 3.90–4.09) | (CI 3.71–3.91) | |
