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Related Experiment Videos

Supraorbital Doppler evaluation in vascular surgery.

J B Towne, V M Bernhard, S Salles-Cunha

    Medical Instrumentation
    |March 1, 1979
    PubMed
    Summary

    Directional Doppler ultrasound of supraorbital vessels effectively assesses internal carotid artery blockage. Reversed blood flow indicates collateral circulation, aiding in diagnosing extracranial cerebrovascular disease.

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    Area of Science:

    • Vascular Ultrasound
    • Cerebrovascular Diagnostics
    • Noninvasive Imaging

    Background:

    • Internal carotid artery (ICA) occlusive disease can compromise cerebral blood flow.
    • Collateral circulation pathways, such as through supraorbital vessels, are crucial for brain perfusion.
    • Noninvasive methods are needed to evaluate ICA patency and collateral function.

    Purpose of the Study:

    • To evaluate the effectiveness of directional Doppler examination of supraorbital vessels for assessing internal carotid artery patency.
    • To determine the accuracy of this noninvasive technique compared to arteriography.

    Main Methods:

    • Directional Doppler ultrasound was used to measure arterial flow direction in supraorbital vessels.
    • The response of supraorbital flow to compression of superficial temporal and facial arteries was assessed.
    • Doppler findings were compared with results from arteriography in 125 carotid arteries from 63 patients.

    Main Results:

    • Directional Doppler examination of supraorbital vessels demonstrated reversed flow in cases of internal carotid artery occlusive disease, indicating collateral circulation.
    • The Doppler supraorbital test achieved an overall accuracy of 87% when compared to arteriography.
    • This method proved valuable in assessing extracranial cerebral circulation.

    Conclusions:

    • Directional Doppler examination of supraorbital vessels is an effective, noninvasive method for evaluating internal carotid artery patency.
    • The technique accurately identifies collateral circulation patterns in patients with cerebrovascular disease.
    • Doppler assessment of supraorbital vessels is a valuable tool for evaluating extracranial cerebral circulation.

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