Title
Blind source separation of ex-vivo aorta tissue multispectral images
Date Issued
06 April 2015
Access level
open access
Resource Type
journal article
Author(s)
Universidad Pontificia Bolivariana
Publisher(s)
OSA - The Optical Society
Abstract
Blind Source Separation methods (BSS) aim for the decomposition of a given signal in its main components or source signals. Those techniques have been widely used in the literature for the analysis of biomedical images, in order to extract the main components of an organ or tissue under study. The analysis of skin images for the extraction of melanin and hemoglobin is an example of the use of BSS. This paper presents a proof of concept of the use of source separation of ex-vivo aorta tissue multispectral Images. The images are acquired with an interference filter-based imaging system. The images are processed by means of two algorithms: Independent Components analysis and Non-negative Matrix Factorization. In both cases, it is possible to obtain maps that quantify the concentration of the main chromophores present in aortic tissue. Also, the algorithms allow for spectral absorbance of the main tissue components. Those spectral signatures were compared against the theoretical ones by using correlation coefficients. Those coefficients report values close to 0.9, which is a good estimator of the method’s performance. Also, correlation coefficients lead to the identification of the concentration maps according to the evaluated chromophore. The results suggest that Multi/hyper-spectral systems together with image processing techniques is a potential tool for the analysis of cardiovascular tissue.
Start page
1589
End page
1598
Volume
6
Issue
5
Language
English
OCDE Knowledge area
Sistema cardiaco, Sistema cardiovascular
Radiología, Medicina nuclear, Imágenes médicas
Biotecnología relacionada con la salud
Subjects
Scopus EID
2-s2.0-84948753855
Source
Biomedical Optics Express
Sources of information:
Directorio de Producción Científica
Scopus