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[Transcranial color-coded duplex ultrasonography in adults]

R W Baumgartner1, H P Mattle, G Schroth

  • 1Neurologische Universitätsklinik, Inselspital Bern.

Schweizerische Medizinische Wochenschrift
|November 6, 1993
PubMed
Summary

Transcranial color-coded duplex sonography (TCCD) effectively visualizes intracranial arteries, aiding in diagnosing conditions like stenoses and occlusions. This ultrasound technique provides reliable blood flow velocity data for neurological assessments.

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Area of Science:

  • Neurology
  • Medical Imaging
  • Vascular Ultrasound

Background:

  • Transcranial color-coded duplex sonography (TCCD) offers advancements in ultrasound technology for studying intracranial circulation.
  • Previous methods had limitations in assessing the complex network of cerebral blood vessels.

Purpose of the Study:

  • To evaluate the delineation rate of non-occluded intracranial arteries using TCCD.
  • To assess the reliability of TCCD findings for pathological conditions compared to cerebral angiography.
  • To establish reference blood flow velocity data for intracranial arteries.

Main Methods:

  • TCCD was applied to 33 healthy volunteers and 63 neurological patients.
  • Delineation rates of various intracranial arteries (VA, BA, MCA, PCA, ICA, ACA, PICA) were recorded.

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  • TCCD findings were compared with cerebral angiography for pathological diagnoses.

    • Main Results:

    • High delineation rates were achieved for most intracranial arteries (e.g., 99% for VA, 98% for BA, 96% for MCA/PCA).
    • TCCD successfully identified stenoses, occlusions, collateral circulations, arteriovenous malformations, and aneurysms, confirmed by angiography.
    • Reference systolic and end-diastolic blood flow velocities were established for ACA, MCA, PCA, BA, VA, and PICA.

    Conclusions:

    • TCCD is a highly effective method for visualizing intracranial arteries and assessing cerebral hemodynamics.
    • The technique demonstrates good reliability in detecting cerebrovascular pathologies when compared to angiography.
    • Established velocity data provide valuable reference ranges for clinical interpretation.