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Inspection is the initial step in assessing the cardiovascular system. It involves a detailed visual examination that provides crucial information about a patient's circulatory and cardiac health. This systematic process, conducted from head to toe, helps identify signs of cardiovascular conditions by observing physical appearance, skin and mucous membranes, jugular and carotid pulsations, chest symmetry, and the condition of the extremities.
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Practical Approach to Performing the Comprehensive Carotid Duplex Examination.

Carol Mitchell1, Stavros Agorastos2, Clark Garcia3

  • 1University of Wisconsin-Madison, School of Medicine and Public Health, Department of Medicine, Madison, Wisconsin.

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|October 25, 2025
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Summary
This summary is machine-generated.

This guide details a comprehensive duplex ultrasound protocol for carotid and vertebral arteries. It covers imaging techniques, Doppler analysis, and plaque assessment for accurate diagnosis.

Keywords:
Carotid ultrasoundDopplerDuplex sonographyInstrumentationProtocol

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Area of Science:

  • Vascular Ultrasound
  • Medical Imaging Technology
  • Cerebrovascular Diagnostics

Background:

  • Carotid and vertebral arteries are crucial for brain blood supply.
  • Duplex ultrasound is a primary non-invasive tool for evaluating these vessels.
  • Standardized protocols ensure comprehensive and reproducible assessments.

Purpose of the Study:

  • To outline a detailed duplex ultrasound imaging protocol for carotid and vertebral arteries.
  • To present essential two-dimensional imaging, Doppler, and measurement techniques.
  • To review plaque grading and classification within the context of carotid duplex examination.

Main Methods:

  • Utilizing two-dimensional B-mode imaging for anatomical visualization.
  • Employing Doppler ultrasound (color, spectral) to assess blood flow velocity and direction.
  • Implementing standardized measurement techniques for vessel diameter and stenosis.
  • Applying established criteria for grading and classifying atherosclerotic plaque.

Main Results:

  • The protocol provides a systematic approach to carotid and vertebral artery ultrasound.
  • Specific techniques for optimal image acquisition and data analysis are detailed.
  • Plaque characteristics (echogenicity, surface regularity) are linked to stenosis severity.

Conclusions:

  • A comprehensive duplex ultrasound protocol is essential for accurate cerebrovascular evaluation.
  • Standardized imaging and analysis improve diagnostic confidence and patient management.
  • Understanding plaque morphology aids in risk stratification for stroke.