Table 4.
Overall and region-based detection rate using single T1 sequence MRI evaluation.
| Single T1 | N | Sensitivity + 95% CI | Specificity + 95% CI | PPV + 95 95% CI | NPV + 95% CI |
|---|---|---|---|---|---|
| All LN | 130/187 |
71.8% (58.2–82.3%) |
99.0% (98.3–99.5%) |
72.2% (47.9–88.0%) |
99.5% (98.5–99.8%) |
| Iliac left | 21/31 |
73.1% (48.9–88.5%) |
99.0% (97.1–99.6%) |
53.9% (19.5–83.1%) |
99.6% (98.1–99.9%) |
| Iliac right | 28/47 |
65.0% (43.2–81.9%) |
98.0% (95.2–99.2%) |
71.7% (38.2–92.4%) |
98.7% (98.7–99.7%) |
| Obturator left | 24/33 |
75.9% (50.0–91.0%) |
99.7% (98.3–99.8%) |
98.4% (86.0–99.6%) |
98.2% (85.9–99.6%) |
| Obturator right | 36/52 |
67.5% (47.2–83.0%) |
97.8% (95.0–99.0%) |
86.2% (65.0–97.1%) |
93.5% (86.6–98.9%) |
| Presacral | 13/16 |
82.3% (48.8–95.8%) |
100% (100–100%) |
99.9% (0–100%) |
97.0% (0–100%) |
| Inguinal | 8/8 |
100% (0–100%) |
99.3% (0–100%) |
28.5% (18.4–36.6%) |
100% (100–100%) |
This table summarizes the region-based analysis of the lymph node metastases in MRI using single T1 sequence evaluation. The columns present number, sensitivities, specificities, positive and negative predictive value including 95% confidence interval. The rows are fielded in the six defined anatomical regions iliac left and right, obturator left and right, presacral and inguinal region.
Abbreviations: LN = Lymph nodes, N = number of positive LN in MRI versus PET-CT, PPV = positive predictive value, NPV = Negative predictive value, CI = 95% Confidence interval.