Abstract: Along with the indepth application of PACS， deeper requirement are put forward by the system users that medical images can be retrieved intelligently， but not just being managed. In order to fulfill intelligent retrieval of medicine images， a SR relational database model was proposed on the basis of foggy diagnostic model. The model was based on fuzzy theory， which could be a very good representation of uncertain information in diagnostic language for medical images. On this basis， the mapping method from the proposed relational databases to XML documents was studied， by which the XML expression of SR information was realized. The foundation was laid for the next intelligent retrieval of medical images by using the proposed model.

Key words: PACS(picture archiving and communication system), DICOM(digital imaging and communications in medicine) SR, relational database, XML, mapping, uncertainty data model, semantics, intelligent retrieval.