Nakagami Markov random field as texture model for ultrasound RF envelope image

被引：15

作者：

Bouhlel, N. ^{[1
]}

Sevestre-Ghalila, S. ^{[2
]}

机构：

[1] Natl Engn Sch Tunis, Informat Technol & Commun Dept, Lab U2S, Tunis 1002, Tunisia

[2] Univ Paris 05, Lab MAP5, CNRS, UMR 8145, F-75006 Paris, France

来源：

COMPUTERS IN BIOLOGY AND MEDICINE | 2009年 / 39卷 / 06期

关键词：

Ultrasound; Backscatter characteristics; Markov model; Nakagami distribution; Texture; RF envelope; Choroidal melanoma; NON-RAYLEIGH STATISTICS; K-DISTRIBUTION; B-SCANS; BREAST; CLASSIFICATION; DISTRIBUTIONS;

D O I：

10.1016/j.compbiomed.2009.03.010

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The aim of this paper is to propose a new Markov random field (MRF) model for the backscattered ultrasonic echo in order to get information about backscatter characteristics, such as the scatterer density, amplitude and spacing. The model combines the Nakagami distribution that describes the envelope of backscattered echo with spatial interaction using MRF. In this paper, the parameters of the model and the estimation parameter method are introduced. Computer simulation using ultrasound radio-frequency (RF) simulator and experiments on choroidal malignant melanoma have been undertaken to test the validity of the model. The relationship between the parameters of MRF model and the backscatter characteristics has been established. Furthermore, the ability of the model to distinguish between normal and abnormal tissue has been proved. All the results can show the success of the model. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：535 / 544

页数：10

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