Grading and staging of hepatic fibrosis, and its relationship with noninvasive diagnostic parameters

Table 4 Comparison between parameters of ultrasonic 2-D and color Doppler flow image and groups of inflammation grading

Parameter	Comparision among groups of inflammation grading
	1-2	1-3	1-4	2-3	2-4	3-4
Inner diameter of left portal vein		a
Inner diameter of middle liver vein			a		a
Inner diameter of right liver vein			b		a
Thickness of gallbladder wall		a	b	a	b
Shape of gallbladder			b		b
Vertical diameter of spleen		a	b	a	b
Thickness of spleen		a	b	a	b
Diameter of spleen vein			b		a
Thickening of the light dots in liver substance			b		b
Movement degree along with breath			b		a
Movement degree along with heart beat			b		a
Blood stream velocity in constriction phase of liver artery		a
Blood stream velocity in dilation phase of liver artery			a

^aP < 0.05, ^bP < 0.01.