Document Detail

Edge detection versus densitometry for assessing coronary stenting quantitatively.
MedLine Citation:
PMID:  1998279     Owner:  NLM     Status:  MEDLINE    
The optimal method used to analyze quantitatively the immediate angiographic results of coronary stenting in the coronary arteries has not been studied. Accordingly, minimal luminal cross-sectional area was determined by 2 methods, edge detection and densitometry, in 19 patients who underwent percutaneous transluminal coronary angioplasty (PTCA) and then coronary stent implantation for symptomatic coronary stenoses. The correlation coefficient, 0.73 before angioplasty, decreased to 0.59 after coronary angioplasty and then increased to 0.83 after stent implantation. The mean differences between edge detection and densitometric determinations of minimal luminal cross-sectional area were 0.31 +/- 0.51 mm2 before PTCA, -0.38 +/- 1.22 mm2 after angioplasty and 0.35 +/- 0.79 mm2 after coronary stenting. It is concluded that, although the correlation and variability in the measurement of minimal luminal cross-sectional area between edge detection and densitometry deteriorate after PTCA, they are improved after stenting, probably because of smoothing of the vessel contours by the stent and remodeling of the stented segment into a more circular configuration. Therefore, in the stented coronary artery, edge detection and densitometry are equally acceptable methods of analysis.
B H Strauss; Y Juilliere; B J Rensing; J H Reiber; P W Serruys
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The American journal of cardiology     Volume:  67     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1991 Mar 
Date Detail:
Created Date:  1991-04-01     Completed Date:  1991-04-01     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  484-90     Citation Subset:  AIM; IM    
Catheterization Laboratory, Thoraxcenter, Erasmus University, Rotterdam, The Netherlands.
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MeSH Terms
Absorptiometry, Photon*
Angioplasty, Transluminal, Percutaneous Coronary*
Coronary Angiography*
Coronary Disease / radiography,  therapy
Image Processing, Computer-Assisted*
Middle Aged

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