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. 2016 Dec 8;6:38643. doi: 10.1038/srep38643

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.