Table 4. Comparison of quantitative TIC parameters of heterogeneous hypo-enhancement and homogeneous hyper/iso-enhancement between thyroid inflammatory nodules and papillary carcinoma.
| Parameters | Heterogeneous hypo-enhancement | Homogeneous hyper/iso-enhancement | |||||
|---|---|---|---|---|---|---|---|
| Inflammatory nodules | Papillary carcinoma | P value | Inflammatory nodules | Papillary carcinoma | P value | ||
| PI | 51.15 (38.82, 58.78) | 81.3 (73.15, 92.46) | <0.001* | 73.18 (63.74, 87.34) | 90.71 (84.50, 105.87) | 0.003* | |
| RT (s) | 5.03 (4.00, 8.11) | 4.36 (3.25, 7.19) | 0.962 | 4.54 (3.98, 6.20) | 5.10 (3.72, 11.79) | 0.129 | |
| TTP (s) | 6.43 (4.64, 9.35) | 4.97 (3.67, 8.19) | 0.854 | 5.58 (4.54, 6.90) | 6.22 (4.18, 12.69) | 0.100 | |
| AS | 17.95 (10.27, 23.21) | 32.09 (15.58, 51.40) | 0.016* | 29.83 (23.11, 38.23) | 35.75 (12.76, 51.00) | 0.501 | |
| DS | −2.92 (−4.76, −1.47) | −3.81 (−7.89, −2.14) | 0.595 | −4.97 (−8.03, −2.31) | −4.90 (−10.69, −1.93) | 0.567 | |
The data was presented as median (interquartile range). *P<0.05 were considered as significant difference. TIC, time-intensity curve; PI, peak intensity; RT, rise time; TTP, time to peak; AS, the maximum slope rate of ascending curve; DS, the maximum slope rate of descending curve.