Sharing Documents and IHE XDS

IHE XDS (cross-enterprise document sharing) can be used to share documents between different organizations using a common portal. The XDS registry holds document metadata, which can be searched to retrieve appropriate documents stored in XDS repositories. The local specifications for metadata are defined in an affinity domain. The metadata includes information about each document, the patient, author, event and technical data. A number of related specifications have been defined as extensions.