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JACIII Vol.11 No.4 pp. 396-402
doi: 10.20965/jaciii.2007.p0396
(2007)

Paper:

Classification of Liver Disease from CT Images Using a Support Vector Machine

Chien-Cheng Lee*, Sz-Han Chen*, and Yu-Chun Chiang**

*Department of Communications Engineering, Yuan Ze University, Chungli, Taoyuan 320, Taiwan
**Department of Mechanical Engineering, Yuan Ze University, Chungli, Taoyuan 320, Taiwan

Received:
April 30, 2006
Accepted:
August 5, 2006
Released:
April 20, 2007
Keywords:
SVM, co-occurrence matrix, liver cyst, hepatoma, hemangioma
Abstract

We propose a classifier based on the support vector machine (SVM) for automatic classification in liver disease. The SVM, stemming from statistical learning theory, involves state-of-the-art machine learning. The classifier is a part of computer-aided diagnosis (CADx), which assists radiologists in accurately diagnosing liver disease. We formulate discriminating between cysts, hepatoma, cavernous hemangioma, and normal tissue as a supervised learning problem, and apply SVM to classifying the diseases using gray level and co-occurrence matrix features and region-based shape descriptors, calculated from regions of interest (ROIs), as input. Significant features of ROI enable us to simplify SVM input space and to feed the SVM representative information. By simplifying and clarifying the diagnosis process, we separate the classification of liver disease into hierarchical multiclass classification. We use the receiver operating characteristic (ROC) curve to evaluate diagnosis performance, demonstrating the classifier’s good performance.

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