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Related Experiment Videos

The catheter wall simulating thrombus formation seen on pullout angiograms: an experimental study

R L Mani, R L Eisenberg

    Radiology
    |June 1, 1977
    PubMed
    Summary

    A radiolucent line seen on angiograms is not a thrombus sleeve but the catheter wall itself. This finding clarifies imaging interpretation for interventional procedures.

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    Area of Science:

    • Radiology
    • Medical Imaging
    • Interventional Cardiology

    Background:

    • A radiolucent line is frequently observed alongside radiopaque catheter walls in pullout angiograms.
    • This line is often misinterpreted as a thrombus sleeve, potentially leading to inaccurate clinical assessments.

    Purpose of the Study:

    • To investigate the true nature of the radiolucent line seen on angiograms.
    • To determine if the line represents thrombus formation or an artifact of the imaging or catheter.

    Main Methods:

    • Analysis of over 176 pullout angiograms showing the radiolucent line.
    • Reproduction of the line in a bloodless experimental model.
    • Correlation of the line's width and contour with varying catheter wall thicknesses (6.5, 7, and 8 French).

    Main Results:

    • The radiolucent line was reproducible in a bloodless model, ruling out thrombus.
    • Line width correlated directly with catheter wall thickness.
    • The line's irregular contour with specific French sizes was observed.
    • Experiments confirmed the line represents the outer third of the catheter wall.

    Conclusions:

    • The radiolucent line seen on angiograms is an artifact of the catheter wall, not a thrombus sleeve.
    • This finding is crucial for accurate interpretation of imaging during catheter-based interventions.
    • Understanding this artifact can prevent misdiagnosis and unnecessary interventions.

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