%0 Conference Proceedings
%T Ultrasonographic Plaque Characterization using a Rayleigh Mixture Model
%A Jose Seabra
%A F. Javier Sanchez
%A Francesco Ciompi
%A Petia Radeva
%B 7th IEEE International Symposium on Biomedical Imaging
%D 2010
%@ 1945-7928
%@ 978-1-4244-4125-9
%F Jose Seabra2010
%O MILAB
%O exported from refbase (http://refbase.cvc.uab.es/show.php?record=1366), last updated on Thu, 20 Feb 2014 10:16:45 +0100
%X From Nano to MacroA correct modelling of tissue morphology is determinant for the identification of vulnerable plaques. This paper aims at describing the plaque composition by means of a Rayleigh Mixture Model applied to ultrasonic data. The effectiveness of using a mixture of distributions is established through synthetic and real ultrasonic data samples. Furthermore, the proposed mixture model is used in a plaque classification problem in Intravascular Ultrasound (IVUS) images of coronary plaques. A classifier tested on a set of 67 in-vitro plaques, yields an overall accuracy of 86% and sensitivity of 92%, 94% and 82%, for fibrotic, calcified and lipidic tissues, respectively. These results strongly suggest that different plaques types can be distinguished by means of the coefficients and Rayleigh parameters of the mixture distribution.
%U 10.1109/ISBI.2010.5490428
%U http://dx.doi.org/10.1109/ISBI.2010.5490428
%P 1–4