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Updated: Jul 15, 2026

A Magnetic Resonance Imaging-based Computational Protocol for Analysis of Plaque Morphology and Hemodynamics in Patients with Carotid Artery Stenosis
09:36

A Magnetic Resonance Imaging-based Computational Protocol for Analysis of Plaque Morphology and Hemodynamics in Patients with Carotid Artery Stenosis

Published on: August 12, 2025

Duplex scanning diagnosis of internal carotid artery dissections. A case control study

C Alecu1, J O Fortrat, X Ducrocq

  • 1Neurology Department, University Hospital, Nancy, France. c.alecu@chu-nancy.fr

Cerebrovascular Diseases (Basel, Switzerland)
|April 5, 2007
PubMed

Insights

Duplex scanning (DS) shows promise for diagnosing internal carotid artery dissections (ICAD). Combining direct and hemodynamic signs improves diagnostic accuracy for ICAD.

Area of Science:

  • Vascular imaging
  • Neurology
  • Diagnostic techniques

Background:

  • The diagnostic reliability of duplex scanning (DS) for internal carotid artery dissections (ICAD) remains uncertain.
  • Accurate diagnosis of ICAD is crucial for preventing stroke.

Purpose of the Study:

  • To evaluate the effectiveness of duplex scanning (DS) in diagnosing internal carotid artery dissections (ICAD).
  • To identify specific DS signs indicative of ICAD.

Main Methods:

  • A comparative study involving 70 patients diagnosed with ICAD and 70 matched controls without dissection.
  • Analysis of nine specific duplex scanning (DS) signs suggestive of ICAD.

Main Results:

  • Several DS signs, including internal tapering occlusion, eccentric narrowing, ectasia, resistive index asymmetry, blood flow slowdown, ophthalmic artery flow inversion, and biphasic flow, were significantly more frequent in ICAD patients (p < 0.001).
  • Atheroma plaques were notably absent in 80% of ICAD cases.
  • The combination of direct and hemodynamic DS signs yielded a sensitivity of 90% and a specificity of 60%.

Conclusions:

  • Combining direct and hemodynamic signs in duplex scanning (DS) can enhance the diagnosis of internal carotid artery dissections (ICAD).
  • This integrated approach offers high sensitivity and good specificity for ICAD detection.
Abstract

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