Document Detail


Quantitative assessment of coronary atherosclerotic plaque profile by morphometric analysis of angiographic images.
MedLine Citation:
PMID:  8921754     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Coronary plaque morphology (simple or complex) has a recognized clinical, pathophysiologic, and prognostic importance, but its routine use is hampered by the subjective and qualitative nature of the assessment. The aim of this study was to assess the feasibility and accuracy of mathematical, objective, operator-independent assessment of plaque morphology, by means of algorithms based on vector and fractal analysis, previously developed for describing continuous curves. Twenty coronary angiograms were analyzed: 10 with "simple-type" stenosis (defined according to Ambrose type I pattern, Group I) and 10 with "complex-type" stenosis (Ambrose type II pattern, Group II). Five morphometric parameters effectively separated simple and complex-type stenosis: peaks/cm (Group I = 0.24 +/- 0.31 vs Group II = 2.46 +/- 1.83, P < .01); summed maximum error/cm (I = 0.94 +/- 1.19 vs II = 4.53 +/- 0.56, P < .01); integrated error/cm (I = 0.22 +/- 0.27 vs II = 2.25 +/- 1.68, P < .01); number of features/cm (I = 0.02 +/- 0.05 vs II = 1.19 +/- 0.65, P < .01); standard deviation curvature (I = 0.07 +/- 0.01 vs II = 0.22 +/- 0.21, P = 0.06). The scaled edge-length ratio-the only parameter based on fractal analysis-was not different between the two groups (I = 1.03 +/- 0.01 vs II = 1.13 +/- 0.10, P = ns). Hence, a quantitative description of plaque morphology is feasible and allows an effective discrimination of simple and complex plaque profiles with morphometric parameters based on vector analysis.
Authors:
C Palmieri; M Paterni; R Sicari; E Picano; A Biagini; M Marzilli
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Angiology     Volume:  47     ISSN:  0003-3197     ISO Abbreviation:  Angiology     Publication Date:  1996 Nov 
Date Detail:
Created Date:  1996-12-17     Completed Date:  1996-12-17     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0203706     Medline TA:  Angiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1053-9     Citation Subset:  IM    
Affiliation:
CNR Institute of Clinical Physiology, Pisa, Italy.
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MeSH Terms
Descriptor/Qualifier:
Coronary Angiography*
Coronary Artery Disease / pathology*,  radiography
Feasibility Studies
Fractals
Humans
Retrospective Studies

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