Table 3.

Inter-observer variability for CEUS features between two radiologists.

	Observer 1			Observer 1				Observer 1			Observer 1
	Arrival time			Peak intensity				Homogeneity			Enhancement pattern
Observer 2	Earlier	Meantime	Observer 2	Hypoechoic	Isoechoic	Hyperechoic	Observer 2	Heterogeneous	Homogeneous	Observer 2	Centripetal	Entire
Earlier	15	6	Hypoechoic	264	7	0	Heterogeneous	50	15	Centripetal	2	2
Meantime	4	380	Isoechoic	9	85	15	Homogeneous	20	320	Entire	3	398
k = 0.737 p = 0.000			Hyperechoic	0	15	10	k = 0.694 p = 0.000			k = 0.540 p = 0.000
			k = 0.765 p = 0.000

CEUS, contrast-enhanced ultrasound.