Table 2. Quantitative parameters of the nodule and normal peripheral zone time-intensity curves.
| Parameters | Nodules (n = 130) |
Normal peripheral zone (n = 130) |
||||
|---|---|---|---|---|---|---|
| Benign lesions (n = 76) | Malignant lesions (n = 54) | p value | Benign lesions (n = 76) | Malignant lesions (n = 54) | p value | |
| AT (s) | 22.0 ± 6.0 | 22.7 ± 4.8 | 0.512 | 21.7 ± 6.4 | 21.8 ± 5.7 | 0.913 |
| PI (dB) | 12.6 ± 4.4 | 17.2 ± 3.9 | <0.001 | 13.4 ± 4.8 | 11.8 ± 3.6 | 0.052 |
| MTT (s) | 32.3 ± 9.8 | 37.0 ± 10.4 | 0.011 | 30.4 ± 9.5 | 33.9 ± 9.2 | 0.036 |
| AUC (dB/s) | 685.1 ± 334.1 | 1055.3 ± 404.4 | <0.001 | 705.5 ± 362.8 | 699.1 ± 273.3 | 0.912 |
| TPH (s) | 46.5 ± 15.7 | 52.3 ± 15.8 | 0.040 | 44.3 ± 15.0 | 48.4 ± 14.2 | 0.119 |
| WIS (dB/s) | 1.4 ± 0.6 | 1.5 ± 0.6 | 0.612 | 1.5 ± 0.8 | 1.1 ± 0.6 | 0.001 |
| TTP (s) | 32.4 ± 8.2 | 30.5 ± 5.9 | 0.149 | 31.7 ± 9.1 | 33.7 ± 7.3 | 0.198 |
AT: arrival time; PI: peak intensity; MTT: mean transit time; AUC: area under the curve; TPH: time from peak to one half; WIS: wash in slope; TTP: time to peak. Values are shown as the mean ± standard deviation.