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A Decision-making System in Innammatory Rheumatology Using Diierent Reasoning Methods

We present a computer-aided diagnostic system in clinical medicine. Our approach is focused on the collaboration between two methods of reasoning: diagnosis by reviewing all possible diseases and diagnosis by connrmation of a precise disease. The two methods use the same database in order to guarantee the coherence of the descriptions of the diseases. The collaboration between the methods of reasoning is made possible by their integration in the same program. To design such a system, we used Object-Oriented methods, not only for the medical data design but also for the structuring of processing. Thus, we obtained an Object model for diagnostic reasoning and applied it to innammatory rheumatology. The resulting software called LADRI (Logiciel d'Aide au Diagnostic en Rhumatologie Innammatoire) contains the deenition of 12 essential pathologies of innammatory rheumatology. The software was tested on 78 patients. In more than 92% of cases, the diagnosis made by LADRI corresponded to that of the hospital specialists.