Table VI.
Comparison of the diagnostic value of color Doppler ultrasound, serum CT, serum CEA, and color Doppler ultrasound combined with serum CT and CEA in diagnosing MTC [% (n)].
| Detection indices | Sensitivity | Specificity | Accuracy | Predictive positive value | Predictive negative value |
|---|---|---|---|---|---|
| Ultrasound | 76.92 (30/39) | 96.67 (29/30) | 84.06 (58/69) | 93.75 (30/32) | 75.68 (28/37) |
| CT | 74.36 (29/39) | 96.67 (29/30) | 84.06 (58/69) | 96.67 (29/30) | 72.50 (29/40) |
| CEA | 68.23 (27/39) | 93.33 (28/30) | 78.26 (54/69) | 90.00 (27/30) | 69.23 (27/39) |
| Ultrasound combined with CT and CEA | 94.87 (37/39)a | 93.33 (28/30) | 91.30 (63/69) | 90.24 (37/41) | 92.86 (26/28) |
| χ2 | 8.724 | 0.702 | 4.490 | 1.391 | 5.482 |
| P-value | 0.033 | 0.873 | 0.213 | 0.708 | 0.140 |
a
P<0.05 vs. the separate ultrasound, serum CT, and serum CEA. CT, calcitonin; CEA, carcinoembryonic antigen; MTC, medullary thyroid carcinoma.