Table 4.

Comparison of quantitative parameters of time-intensity curves (TICs) by contrast-enhanced ultrasonography (CEUS) for common benign parotid gland tumors (Mean ± SD) (n = 110).

Group	n	RT (s)	PI (dB)	MTT (s)	AUC	HT (s)	TTP (s)	RS (dB/s)
WT	34	4.36 ± 1.87	7.45 ± 1.38	63.90 ± 23.90	536.27 ± 192.76	66.08 ± 22.18	16.89 ± 2.78	1.28 ± 0.44
PA	54	4.08 ± 1.52	6.74 ± 1.80*	36.75 ± 11.82*	418.70 ± 137.40*	46.29 ± 14.85*	16.23 ± 6.08	2.42 ± 3.34
BCA	22	3.73 ± 1.59	8.93 ±1.13*#	40.55 ± 7.57*	552.15 ± 82.33#	45.93 ± 14.50*	15.49 ± 3.98	2.61 ± 0.99
F		0.99	15.30	31.51	9.59	15.38	0.56	2.92
p		0.376	<0.001	<0.001	<0.001	<0.001	0.572	0.058

PA, pleomorphic adenoma; WT, Warthin tumor; BCA, basal cell adenoma; CEUS, contrast-enhanced ultrasound; RT, rise time; PI, peak intensity; MTT, mean transit time; AUC, area under curve; HT, time from peak to one half; TTP, time to peak; RS, rising slope of wash in curve; SD, standard deviation. Data are shown as the mean ± SD. P < 0.050 was considered to be statistically significant.

Compared with WT, ^*p < 0.050 and compared with PA, ^#p < 0.050.

Please refer to the Supplementary Materials for details.

The bold values were considered to be statistically significant.