HEPAR

HEPAR assists with the diagnosis of disorders of the liver and biliary tract.

The patient's disorder is assessed in two stages. In the first stage, available data from medical interview, physical examination, and simple laboratory tests are used to determine whether the disorder is hepatocellular or biliary obstructive in nature, and whether benign or malignant features are present. In the second stage, the system produces a subset of possible diagnoses out of a set of more than 80 disease categories, using additional data from supplementary tests.

The system is rule based and was developed at the University of Amsterdam.

Lucas, p. and A. Janssens, Development and validation of HEPAR, an expert system for the diagnosis of disorders of the liver and biliary tract, Med. Inf,(London), vol. 16, no. 3, pp. 259-70, July-Sept., 1991.