Document Detail

The role of pulse-wave Doppler sonography in quantifying internal carotid stenosis.
MedLine Citation:
PMID:  8591804     Owner:  NLM     Status:  MEDLINE    
To determine the accuracy of pulse-wave Doppler (PWD) sonography in quantifying cervical internal carotid artery (ICA) stenosis, we compared results of PWD with conventional digital subtraction angiography (DSA). A total of 202 carotid arteries were evaluated by means of these two techniques. The patients were divided into four groups according to the percentage of angiographic carotid stenosis as suggested by NASCET. A mathematic model of quadratic relationship between DSA stenosis and blood flow velocity, recorded by PWD, was worked out; peak systolic velocity and mean velocity values, corresponding to 70% DSA stenosis, were employed as key values to check PWD ability to detect high-grade stenosis. Finally, for each case, the correlation between the two techniques was evaluated. PWD well correlates with DSA, making it possible to detect and correctly quantify high-grade ( > 70%) ICA stenosis. In 4 cases with moderate ICA stenoses, blood flow velocity values were over the key values: in cases of moderate angiographic ICA stenosis, PWD identifies those patients in whom the haemodynamic pattern is comparable to the higher group, providing further matter for discussion in order to define surgical selection criteria.
L Fiori; G Parenti
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  European neurology     Volume:  35     ISSN:  0014-3022     ISO Abbreviation:  Eur. Neurol.     Publication Date:  1995  
Date Detail:
Created Date:  1996-04-04     Completed Date:  1996-04-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0150760     Medline TA:  Eur Neurol     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  354-8     Citation Subset:  IM    
Institute of Neurosurgery, University of Pisa, Italy.
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MeSH Terms
Aged, 80 and over
Angiography, Digital Subtraction
Blood Flow Velocity
Carotid Artery, Internal / physiopathology,  radiography,  ultrasonography*
Carotid Stenosis / physiopathology,  radiography,  ultrasonography*
Cerebral Angiography
Evaluation Studies as Topic
Middle Aged
Ultrasonography, Doppler, Pulsed*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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