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Related Experiment Videos

Hepatic venous outflow obstruction: evaluation with pulsed duplex sonography.

T Hosoki1, C Kuroda, K Tokunaga

  • 1Department of Radiology, Osaka University Medical School, Japan.

Radiology
|March 1, 1989
PubMed
Summary

Pulsed Doppler sonography effectively evaluates hepatic outflow obstruction, distinguishing Budd-Chiari syndrome from hepatic venocclusive disease by analyzing blood flow patterns in key veins. This non-invasive technique offers valuable hemodynamic insights.

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Area of Science:

  • Medical Imaging
  • Vascular Ultrasound
  • Hepatology

Background:

  • Hepatic outflow obstruction encompasses conditions like Budd-Chiari syndrome and hepatic venocclusive disease, characterized by impaired blood flow from the liver.
  • Accurate hemodynamic assessment is crucial for diagnosis and management of these complex vascular disorders.

Observation:

  • Pulsed Doppler sonography was utilized to examine blood flow dynamics in the inferior vena cava (IVC), hepatic veins, collateral veins, and portal vein in six patients.
  • Specific attention was paid to alterations in flow patterns, including absence, reversal, turbulence, and velocity changes.

Findings:

  • In Budd-Chiari syndrome, Doppler revealed abnormal flow in the IVC and hepatic veins (absent, reversed, turbulent, or continuous), with reduced portal vein velocity being typical.

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  • Hepatic venocclusive disease presented with normal IVC and hepatic vein flow but increased portal vein velocity.

    • Implications:

    • Doppler sonography demonstrates significant utility in characterizing hemodynamic changes associated with hepatic outflow obstruction.
    • Findings correlate well with therapeutic outcomes and angiographic data, supporting its role in clinical decision-making.
    • This non-invasive method aids in differentiating between Budd-Chiari syndrome and hepatic venocclusive disease.