Sensitivity, Specificity, Negative Predictive Value, and Positive Predictive Value According to Analysis and Modality
| Analysis | Sensitivity | Specificity | Negative predictive value | Positive predictive value |
| Laterality and gland number (n = 146) | ||||
| SPECT/CT plus ultrasound | 83 (75.5–88.3) | 96 (91.1–98.4) | 84 (77.5–89.3) | 95 (90.2–98.3) |
| SPECT/CT* | 75 (66.8–81.5) | 96 (91.3–98.5) | 79 (72.4–84.8) | 95 (89.0–98.1) |
| Quadrant and gland number (n = 135) | ||||
| SPECT/CT plus ultrasound | 77 (68.9–83.4) | 97 (94.5–98.3) | 92 (89.1–94.5) | 89 (82.5–94.2) |
| SPECT/CT* | 70 (61.5–77.1) | 97 (94.8–98.4) | 90 (86.7–92.7) | 89 (81.9–94.3) |
↵* Analyzed by disregarding ultrasound component of examination.
Data are percentage followed by 95% confidence interval in parentheses.