Abstract
Hepatic artery is dominant compared to portal vein in liver tumor vascularization. Malignant tumors have uncontrolled growth and spread onto neighbouring tissues through a tumor vascular network. Based on this we discussed the use arterial flow parameters including systolic and diastolic speed, Doppler perfusion index, and resistance index for early detection of liver metastasis. We also discussed possibility to make differential diagnosis from other disease such as arterial stenosis, liver cirrhosis, steatosis using these parameters in better diagnosis confirmation.
Highlights
Normal arterial flow of these arteries is anterograde both in systole and Provisionally accepted: 25.11.2008
Normal hepatic artery flow measured by Doppler ultrasonography
Vascularization and liver tumor hemodynamics Hepatic artery is dominant compared to portal vein in liver tumor vascularization
Summary
Power color and Doppler sonography are used for a the research of hepatic arterial perfusion in tumor tissues (Figure 2a,b,c). Doppler index Doppler indices are calculated from the Doppler spectrum and enable indirect examination of vascular resistance in blood vessels with pulsatile flow. Because of structural and hemodynamic alterations in metastasis (i.e. increased vasoconstriction), the arterial resistance is changed, along with the decline of the hepatic artery RI.
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