Diagnostic efficacy of diffusion-weighted imaging and semiquantitative and quantitative dynamic contrast-enhanced magnetic resonance imaging in salivary gland tumors

Table 4 Semiquantitative dynamic contrast-enhanced magnetic resonance imaging parameters of different histopathologic salivary gland tumors

	TIC Pattern, n(%)				Tpeak (s)	WR (%)
	A	B	C	D
Pleomorphic adenomas	14 (70.0)	0 (0)	0 (0)	0 (0)	202.74 ± 21.48 (a)	-
Warthin’s tumors	0 (0)	18 (66.7)	0 (0)	0 (0)	20.26 ± 11.72 (b)	59.33 ± 10.99 (a)
Other benign tumors	4 (20.0)	4 (14.8)	10 (45.5)	0 (0)	74.94 ± 75.47 (c)	17.89 ± 14.99 (b)
Malignant tumors	2 (10.0)	5 (18.5)	12 (54.5)	4 (100)	60.60 ± 55.78 (c)	18.48 ± 18.38 (b)
P value	< 0.001				< 0.001	< 0.001

Data are shown as the mean ± SD. One-way ANOVA was used. abc: Indicates that the means with the same letters in the same column are not significantly different. TIC: Time intensity curve; T_peak: Time to peak; WR: Washout ratio; n: Number of salivary gland tumors.