Document Detail

Reproducibility of carotid artery Doppler frequency measurements.
MedLine Citation:
PMID:  3911509     Owner:  NLM     Status:  MEDLINE    
Doppler sonography of 29 extracranial carotid arteries was performed twice within three days or less. Angiography revealed stenoses with from 10 to 95% diameter reduction in 25 internal carotid arteries whereas four vessels were found to be normal. The systolic peak frequency of the internal carotid artery read from the Doppler spectrum (n = 29) could be reproduced very well. This was shown by a linear regression nearest the line of identical values with a coefficient of correlation r = 0.97 (p less than 0.001). Other values derived from the spectral analysis of the Doppler shift signal were not so well reproduced including the peak frequency ratio (systolic peak frequency of the internal carotid artery/systolic peak of the common carotid artery) (n = 22; r = 0.81; p less than 0.001). The mean frequencies read from the zero-crossing detector recordings (n = 20) could not be reproduced as demonstrated by a linear regression far away from the line of identical measurements with a coefficient of correlation r = 0.43 (p less than 0.05).
M Fischer; K Alexander
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Stroke; a journal of cerebral circulation     Volume:  16     ISSN:  0039-2499     ISO Abbreviation:  Stroke     Publication Date:    1985 Nov-Dec
Date Detail:
Created Date:  1986-02-21     Completed Date:  1986-02-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0235266     Medline TA:  Stroke     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  973-6     Citation Subset:  IM    
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MeSH Terms
Arterial Occlusive Diseases / physiopathology
Carotid Arteries / physiopathology*
Carotid Artery Diseases / physiopathology*
Carotid Artery, Internal / physiopathology
Regression Analysis

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

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