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Proceedings Paper

Application of segmentation of intravascular images for tissue characterization of vascular pathology
Author(s): Evelin Lieback; Reinhard Berger; Roland Hetzer
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Paper Abstract

Intravascular images from patients undergoing coronary angioplasty were obtained by a 20 MHz catheter probe. Texture analysis was performed computing features of different regions of interest, representing soft and calcified plaque and thrombus. For each class about 100 feature sets were disposed, computed in regions selected in 30 images. Texture features were classified using Bayesian classifier and a neural back propagation network. The statistical classifier led to a good discrimination between soft and calcified plaque whereas half of the thrombus feature sets were recognized as soft plaque. The accuracy of the classification result when using the neural network classifier was 87% for calcified plaque, 88% for soft plaque, and 76% for thrombus. The neural classification process was implemented as a visualization routine for PC supported classification. For this purpose the 51 texture parameters were calculated and sent to the recall routine which delivered the neural network classification result. The classification result were color encoded with red, blue and green labels for calcified plaque, soft plaque and thrombus.

Paper Details

Date Published: 12 April 2000
PDF: 5 pages
Proc. SPIE 3982, Medical Imaging 2000: Ultrasonic Imaging and Signal Processing, (12 April 2000); doi: 10.1117/12.382250
Show Author Affiliations
Evelin Lieback, German Heart Institute Berlin (Germany)
Reinhard Berger, aviCOM Ltd. Co. (Germany)
Roland Hetzer, German Heart Institute Berlin (Germany)

Published in SPIE Proceedings Vol. 3982:
Medical Imaging 2000: Ultrasonic Imaging and Signal Processing
K. Kirk Shung; Michael F. Insana, Editor(s)

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