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[Disorders of hepatic circulation and imaging with color doppler ultrasonography]
M Szántová1, V Kupcová, L Valko
1III. Interná klinika Lekárskej fakulty Univerzity Komenského v Bratislave, Slovakia.
Insights
Color Doppler ultrasonography (CDU) effectively images hepatic circulation disturbances like arterial perfusion changes in liver cirrhosis and portal vein thrombosis. This non-invasive method evaluates portal hypertension and assesses hepatic artery viability post-liver transplant.
Area of Science:
- Medical Imaging
- Hepatology
- Vascular Ultrasound
Background:
- Hepatic circulation disturbances are common in various liver diseases and post-surgical conditions.
- Accurate imaging is crucial for diagnosis, management, and monitoring of liver conditions and transplants.
- Traditional imaging methods may have limitations in assessing dynamic vascular changes.
Purpose of the Study:
- To analyze disturbances in hepatic circulation.
- To evaluate the imaging capabilities of color Doppler ultrasonography (CDU) for these disturbances.
- To assess CDU's role in portal hypertension and post-liver transplant vascular assessment.
Main Methods:
- Combined use of standard B two-dimensional imaging and color Doppler ultrasonography (CDU).
- Analysis of specific conditions including liver cirrhosis, portal vein thrombosis, liver malignancies, and portal vein obstruction.
- Evaluation of portal hypertension (prehepatic, hepatic, posthepatic) and hepatic artery viability after transplantation.
Main Results:
- High-quality CDU can image the predominance of arterial perfusion in liver cirrhosis.
- CDU detects changes associated with portal vein thrombosis, liver malignancies, and portal vein obstruction.
- CDU is a valuable non-invasive tool for evaluating portal hypertension and hepatic artery viability post-transplant.
Conclusions:
- Color Doppler ultrasonography is a powerful tool for visualizing hepatic circulation abnormalities.
- CDU aids in the non-invasive diagnosis and management of portal hypertension.
- CDU is essential for assessing vascular integrity after liver transplantation and surgical shunts.
Abstract:
The authors analyse disturbances of hepatic circulation and the possibilities of their imaging by colour Doppler ultrasonography (CDU) in combination with standard B two-dimensional imaging. The predominance of arterial perfusion in liver cirrhosis, portal vein thrombosis, malign diseases of the liver, or extraluminal obstruction of portal vein are changes which can be imaged by means of high-quality colour Doppler imaging. CDU is a non-invasive method of evaluation of portal hypertension, namely of prehepatic, hepatic and posthepatic type. It is a method of investigation of the viability of the hepatic artery after transplantation of the liver, including that of surgical portocaval anastomoses and transjugular intrahepatic portosystemic shunts. (Fig. 6, Ref. 33.).