Table 4 Diagnostic accuracy in differentiating between high-grade and low-grade endometrial stromal sarcomas based on selected MR imaging features
Parameters | n | TP | TN | FP | FN | Sensitivity | Specificity | Accuracy | PPV | NPV |
|---|---|---|---|---|---|---|---|---|---|---|
Feather-like enhancement | 20 | 10 | 9 | 0 | 1 | 90.9 (58.7–99.8) | 100 (100–100) | 95.0 (75.1–99.9) | 100 (100–100) | 90.0 (55.5–99.7) |
 Reader 1 | 20 | 10 | 9 | 0 | 1 | 90.9 (58.7–99.8) | 100 (100–100) | 95.0 (75.1–99.9) | 100 (100–100) | 90.0 (55.5–99.7) |
 Reader 2 | 20 | 10 | 9 | 0 | 1 | 90.9 (58.7–99.8) | 100 (100–100) | 95.0 (75.1–99.9) | 100 (100–100) | 90.0 (55.5–99.7) |
Necrosis | 20 | 10 | 6 | 3 | 1 | 90.9 (58.7–99.8) | 66.7 (29.9–92.5) | 80.0 (56.3–94.3) | 76.9 (46.2–95.0) | 85.7 (42.1–99.6) |
 Reader 1 | 20 | 10 | 6 | 3 | 1 | 90.9 (58.7–99.8) | 66.7 (29.9–92.5) * | 80.0 (56.3–94.3) * | 76.9 (46.2–95.0) | 85.7 (42.1–99.6) |
 Reader 2 | 20 | 10 | 6 | 3 | 1 | 90.9 (58.7–99.8) | 66.7 (29.9–92.5) * | 80.0 (56.3–94.3) * | 76.9 (46.2–95.0) | 85.7 (42.1–99.6) |
Hemorrhage | 20 | 10 | 5 | 4 | 1 | 90.9 (58.7–99.8) | 55.6 (21.2–86.3) | 75.0 (50.9–91.3) | 71.4 (41.9–91.6) | 83.3 (35.9–99.6) |
 Reader 1 | 20 | 10 | 5 | 4 | 1 | 90.9 (58.7–99.8) | 55.6 (21.2–86.3) * | 75.0 (50.9–91.3) * | 71.4 (41.9–91.6) | 83.3 (35.9–99.6) |
 Reader 2 | 20 | 9 | 5 | 4 | 2 | 81.8 (48.2–97.7) | 55.6 (21.2–86.3) * | 70.0 (45.7–88.1) * | 69.2 (38.6–90.9) | 71.4 (29.0–96.3) |