Decisional methods applied in medical domain

Decision-making is a very important part of medical domain. Physicians must have the ability to decide in any circumstances regarding the illness level of their patients, the adequate treatment, the evolution of the patient during the treatment, the recovery techniques. So, medical decision-making can be a very difficult activity, an error in this field having dramatic consequences. Technology could be used in order to avoid negative results in medical domain and to reduce the risk of error apparition. This paper describes a complex decisional system that is able to make some predictions regarding the liver´s diseases.