| [Objective] To explore the initial application of velocity vector image (VVI) in the evaluation of the velocity of movement,the strain and the strain rate characteristics in the healthy youth,the chronic hepatitis and the hepatic cirrhosis with ascites'portal vein (PV),left portal vein (LPV) and right portal vein (RPV)wall as altitudely scanning,and to analyze the relationship.[Methods] The PV,LPV and RPV of 30 healthy people,30 patients of chronic hepatitis and 18 patients of hepatic cirrhosis with ascites in experimental groups were scanned altitudely to measure the maximal velocity (Vmax),the maximal strain (Smax)and the maximal strain rate (SRmax)on the circumference wall.[Results] There is no statistically significant difference (P>0.05) of the Vmax,Smax and SRmax between the PV wall, the LPV wall and the RPV wall in healthy group.There is no statistically significant difference (P>0.05)of the Vmax,Smax and SRmax between the man and the woman.The pulsation of abdominal aorta and inferior vena cava does not obviously affect the PV.There is statistically significant difference (P<0.05) of the Vmax, and SRmax between the healthy group and the chronic hepatitis group of PV;there is also statistically significant difference(P<0.05) of Vmax,Smax and SRmax between the healthy group and the chronic hepatitis group of LPV.There is statistically significant difference(P<0.05) of Vmax,Smax and SRmax between the healthy group and the hepatic cirrhosis with ascites group of LPV.But there is no statistically significant difference(P>0.05) of Vmax,Smax and SRmax amongst the healthy group and the chronic hepatitis group and the hepatitis cirrhosis with ascites group of RPV.[Conclusions] VVI is an effective,no wound and quantification technique in evaluation of the LPV maximal velocity of movement, the maximal strain and the maximal strain rate in the healthy people, the chronic hepatitis and the hepatic cirrhosis with ascites,and can also monitor the diseases.
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