Table 3.
Total | Benign | Malignant | Diagnostic Performance | ||||||
---|---|---|---|---|---|---|---|---|---|
Sensitivity | Specificity | Accuracy | PPV | NPV | |||||
Echogenic Foci | Type 1 | 207 | 54 | 153 | 60.2 | 60.3 | 60.3 | 73.9 | 44.8 |
Type 2 | 54 | 12 | 42 | 27.5 | 77.8 | 40.6 | 77.8 | 27.5 | |
Type 3 | 94 | 41 | 53 | 20.9 | 69.9 | 37.9 | 56.4 | 32.1 | |
Type 4 | 27 | 16 | 11 | 4.3 | 88.2 | 33.6 | 40.7 | 33.1 | |
Type 5 | 21 | 14 | 7 | 2.8 | 89.7 | 33.1 | 33.3 | 33.1 | |
Type 6 | 41 | 11 | 30 | 11.8 | 91.9 | 39.7 | 73.2 | 35.8 | |
TIRADS | Web-based TIRADS(≥ 8) | 199 | 21 | 178 | 70.1 | 84.6 | 75.1 | 89.4 | 60.2 |
K-TIRADS High Suspicion | 226 | 28 | 198 | 78.0 | 79.4 | 78.5 | 87.6 | 65.9 | |
ATA guidelines High Suspicion | 235 | 30 | 205 | 96.2 | 56.5 | 86.5 | 87.2 | 83.0 | |
Russ et al. (≥ 4B) | 278 | 61 | 217 | 85.4 | 55.1 | 74.9 | 78.1 | 67.0 |
TIRADS thyroid image reporting and data system, ATA american thyroid association, PPV positive predictive value, NPV negative predictive value
Type 1 = Punctate echogenic foci (≤ 1 mm) with or without posterior shadowing
Type 2 = Punctate echogenic foci with comet-tail artifact
Type 3 = Large echogenic foci (> 1 mm) without shadowing
Type 4 = Macrocalcification (defined as large echogenic foci (> 1 mm) with shadowing)
Type 5 = Peripheral curvilinear or eggshell echogenic foci with or without shadowing
Type 6 = Nodules with more than one type of echogenic foci