Journal of Pure and Applied Ultrasonics

Anik Kumar Chakravorty ¹, Subhasree Mukherjee ¹, Kuntal Ghosh ², Ratan Kumar Saha ², Madhusudan Roy ³, Suparna Mazumdar ²

Affiliations
1 Pailan College of Management & Technology, West Bengal University of Technology, Kolkata-69, IN
2 Microelectronics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-64, IN
3 Department of Radiology, Chittaranjan National Cancer Institute, Kolkata-26, IN

Abstract

Texture analysis based on spatial gray-level dependence (SGLD) matrix computation was carried out over the input ultrasound images of livers to extract features, namely, maximum probability, uniformity, entropy, element difference moment of order 2, inverse element difference moment of order 2, homogeneity, correlation and contrast. In this work thirty ultrasound scan images of human normal livers as identified by the physician were collected from hospital. From each image portion of the liver, five sub-images were suitably cropped and taken as an input image for analysis. Finally, an unsupervised neural network learning technique viz. Self Organising Map (SOM) was used to classify normal liver parenchyma.

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