Preliminary Research of Velocity Vector Image in the Evaluation of Portal Vein Inner Membrane Condition in Healthy & nbsp;Youth
Objective To explore the portal vein(PV) do influence the tissue of the liver or not, using 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' 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. Conclusions VVI is an effective, no wound and quantification technique in evaluation of the PV, LPV and RPV maximal velocity of movement, the maximal strain and the maximal strain rate in the healthy people, which can observe the shape and function of liver.