International Journal of Engineering and Technology

Medical diagnosis is one of the most important significant applications of computer science. Knowledge based system is to produce intelligent machine or software which emulate human being’s intelligence. Integration of artificial Intelligence and knowledge based systems leads to a new technology. Application of knowledge based system has been aptly applied to make diagnosis process easier and faster. Earlier diagnosis of carcinogenesis saves enormous lives. The goal of this paper is to evaluate the risk factor of lung cancer disease using knowledge based systems - artificial neural network, fuzzy and expert system and the implementation of ANN using back propagation , fuzzy system with linguistic variables ,membership function along with using expert system rules and image processing. . In this paper the diagnosis systems are demonstrated using neuro fuzzy, expert systems and image processing.