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Carotid Artery Stenosis

Medical Condition • Diagnosed with Ultrasound

Clinical Overview

Carotid artery stenosis refers to narrowing of the internal carotid artery (ICA) due to atherosclerotic plaque. Carotid duplex ultrasound is the standard screening and diagnostic test, combining B-mode imaging of plaque morphology with Doppler velocity measurements to estimate stenosis severity.

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Doppler Criteria

ICA peak systolic velocity (PSV), ICA/CCA PSV ratio, and end-diastolic velocity are used to classify stenosis as less than 50%, 50-69%, 70-99%, or occlusion. The Society of Radiologists in Ultrasound (SRU) consensus criteria are widely used in clinical practice.

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Quick Reference

ICD-10  See condition post for code

Schema  MedicalCondition (schema.org)

Modality  Diagnostic Ultrasound

Ultrasound Specialties

Specialties that diagnose and assess this condition:

Abdominal Sonography

Cardiac Sonography

Vascular Sonography

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Certification Pathways

Credentials for sonographers who work with this condition:

RDMS — Registered Diagnostic Medical Sonographer

RDCS — Registered Diagnostic Cardiac Sonographer

RVT — Registered Vascular Technologist

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Study This Condition

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