Abstract
The use of the ultrasound-imaging platform in medical facilities has significantly increased in recent years due to its superior capability, namely high resolution, less damage to the human body and so on. Though the doctors diagnose a tissue characterization of a liver by observing an image obtained by ultrasound, a diagnostic result seems to make a difference according to experience of doctors. Therefore a quantitative analysis method concerning ultrasonography is required. This paper proposes a CAD (Computer Aided Diagnosis) by an expert system, which has two mechanisms of estimation (Type I: inside roughness, Type II: edge angle). After the effectiveness of Type I and II are confirmed respectively, an estimation combined with two Types is applied to three kinds of condition of the liver, namely normal, chronic hepatitis and liver cirrhosis. As a result, three conditions are exactly recognized and our proposed system is suitable for estimating the tissue characterization of the liver.
