Document Detail


Transthoracic coronary Doppler vibrometry in the evaluation of normal volunteers and patients with coronary artery stenosis.
MedLine Citation:
PMID:  21497717     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Coronary artery vibrometry is a new transthoracic Doppler ultrasound method for the detection of coronary artery stenosis. It detects audio-frequency vibrations generated by coronary artery luminal diameter reduction. We studied 31 patients with known or suspected stenosis using coronary artery vibrometry and quantitative coronary angiography and 83 normal volunteers. A tissue vibration difference index (TVDI) was calculated from the left anterior descending, circumflex, left main and right coronary arteries. Accuracy for coronary artery stenosis detection using TVDI was assessed. Sensitivity for detecting coronary stenosis equal or greater than 25% diameter reduction was 89% in the left anterior descending coronary artery (16/18, 95% confidence interval [CI] = 64%-98%), 87% in the right coronary artery (13/15, 95% CI = 58%-98%), 83% in the circumflex coronary artery (5/6, 95% CI = 36%-99%) and 100% in the left main artery (3/3, 95% CI = 31%-100%). The median TVDI increased with severity of stenosis, suggesting that this measure might be used to track progression/regression of coronary artery stenosis.(E-mail: kwbeach@u.washington.edu).
Authors:
Keith A Comess; Joon Hwan Choi; Zhiyong Xie; Stephan Achenbach; Werner Daniel; Kirk W Beach; Yongmin Kim
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ultrasound in medicine & biology     Volume:  37     ISSN:  1879-291X     ISO Abbreviation:  Ultrasound Med Biol     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-04-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0410553     Medline TA:  Ultrasound Med Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  679-87     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
Affiliation:
Department of Bioengineering, University of Washington, Seattle, WA, USA; Corazonx, Inc., Seattle, WA, USA.
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