Colour Doppler Study of Extracranial Carotid Arteries in Stroke.
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Date
2015-04
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Abstract
The current observational study was conducted to evaluate the morphology of extracranial parts of carotid
arteries by colour doppler in patients of stroke and to assess the peak systolic velocity ratio of internal
carotid artery/common carotid artery and its utility in diagnosis of the carotid arterial disease. Duplex
ultrasound is an inexpensive, non-invasive method that can provide functional and anatomical information
about vessel stenosis and plaque morphology. It is a sensitive method for detection of atherosclerotic
plaque and provides considerable information about the extent and severityof plaque as well as the resulting
diminution of arterial lumen.The study of Colour Doppler of carotid arteries was carried on 35 patients
presenting with stroke. The data gathered included grey scale and Doppler findings of common carotid,
internal carotid and external carotid arteries. In this study, the commonest lesion found was the atherosclerotic
plaque. Most common risk factor for increased intima -media thickness of carotid vessel is found in
patients with history of smoking > 10 years. Atheromatous plaque was most commonly found in the left
carotid and bilateral system (41.1%). Most common site for atheromatous plaque was found to be carotid
bifurcation (48.5%). Significant stenosis (i.e. >40%) was found in 24(64%) of the cases. Peak systolic
velocity ratio showed significant stenosis in 24 (68.5%) of patients. The role of carotid Doppler in detecting
the site and morphology of atherosclerotic plaque with quantifying the amount of stenosis is very welljustified.
In addition carotid Doppler can also be used to assess the prognosis in potential symptomatic and
asymptomatic patients with one or the other risk factors for cerebrovascular disease.
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Keywords
Carotid artery, Carotid Doppler, Peak systolic, Velocity Ratio
Citation
Sharma Rajesh, Mattoo Priyanka. Colour Doppler Study of Extracranial Carotid Arteries in Stroke. JK Science Journal of Medical Education and Research. 2015 Apr-June; 17(2): 88-91.