Title :
Nonlinear analysis of carotid artery echographic images
Author :
Positano, V. ; Mammoliti, R. ; Santarelli, M.F. ; Landini, L. ; Benassi, A.
Author_Institution :
Inst. of Clinical Physiol., CNR, Pisa, Italy
fDate :
11/1/2000 12:00:00 AM
Abstract :
Nonlinear analysis is applied to identifying complex spatial patterns in echographic images of normal and pathologic carotid arteries. Complexity and entropy measures of normal and atherosclerotic plaques are evaluated to characterise the space-temporal evolution of biological patterns. They are correlation dimension, Lyapunov exponent and Kolmogorov entropy. The application of principal component analysis to such measures clusters data according to different atherosclerosis severity degrees, which are confirmed by histologic analysis
Keywords :
biomedical ultrasonics; blood vessels; diseases; entropy; medical image processing; principal component analysis; Kolmogorov entropy; Lyapunov exponent; atherosclerosis severity degree; atherosclerotic plaques; biological patterns; correlation dimension; data clusters; histologic analysis; medical diagnostic imaging; normal carotid arteries; space-temporal evolution;
Journal_Title :
Science, Measurement and Technology, IEE Proceedings -
DOI :
10.1049/ip-smt:20000848
