Correlation between ultrasonographic and pathologic diagnosis of liver fibrosis due to chronic virus hepatitis

Table 1 Relation between US quantitative parameters and fibrosis stages

Parameters	Stage of fibrosis	Mean±SD	F	P
Length of spleen (cm)	S0	10.811.32
	S1	10.82 ± 1.45
	S2	11.35 ± 2.02	5.1947	0.0005
	S3	13.31 ± 2.68
	S4	12.66 ± 2.06
Diameter of portal vein (cm)	S0	1.17 ± 0.11
	S1	1.18 ± 0.17
	S2	1.19 ± 0.13	1.0369	0.3882
	S3	1.20 ± 0.12
	S4	1.27 ± 0.13
Diameter of spleen vein (cm)	S0	0.62 ± 0.16
	S1	0.67 ± 0.15
	S2	0.72 ± 0.18	6.7896	0.0000
	S3	0.69 ± 0.15
	S4	0.81 ± 0.20

Table 2 Diagnostic values of three US parameters for early liver cirrhosis

Parameters and cut-off value	Sensitivity	Specificity	Accuracy	Positive predicative value	Negative predicative value
Length of spleen (12.1 cm)	0.600	0.753	0.737	0.198	0.948
Diameter of spleen vein (8 mm)	0.600	0.781	0.765	0.220	0.950
Diameter of portal vein (12 mm)	0.767	0.446	0.475	0.124	0.949