Table 1.

Mean ± standard deviation of dynamic contrast-enhanced MRI parameters of benign non-Warthin (BNW), Warthin and malignant salivary gland neoplasms

SGT category	Tpeak	Tmax	WR180	WR540	Absolute enhancement	Enhancement ratio
BNW	191.84 ± 108.13	4.09 ± 186.77	0.67 ± 2.80%	3.37 ± 8.22%	7.45 ± 370.56	2.20 ± 0.85
Warthin	37.00 ± 3.41	44.50 ± 6.02	28.20 ± 7.29%	47.63 ± 15.92%	7.25 ± 312.05	1.55 ± 0.74
Malignant	82.80 ± 84.14	1.80 ± 203.10	11.86 ± 11.49%	25.38 ± 18.52%	8.33 ± 396.76	1.92 ± 0.92
BNW–Warthin	<0.005	<0.005	<0.005	<0.005	0.96	0.90
BNW–malignant	0.002	0.001	<0.005	<0.005	0.43	0.42
Warthin–malignant	0.05	0.19	<0.005	<0.005	0.37	0.31

SGT, salivary gland tumour; WR, washout ratio.

p-value of each parameter for differentiation between tumour subtypes is given.