Each Patient Identification Domain requires this Actor to assign patient identities and to notify a Patient Identity Cross-reference Manager Actor of all events related to patient identification (creation, update, merge, etc.). For example, the Registration (ADT) Actor defined by the radiology Scheduled Workflow Profile would likely be a Patient Identity Source.
                        

Serves a well-defined set of Patient Identification Domains. Based on information provided by in each Patient Identification Domain by a Patient Identification Source Actor, it manages the cross-referencing of patient identifiers across Patient Identification Domains.
                        

This actor allows a user to associate information with a patient at the point of care.
                        

A repository of patient information that can be searched on demographic or visit-related fields.
                        

A system that uses patient encounter information provided by the Patient Encounter Source about a patient. It must be grouped with the Patient Demographics Consumer.
                        

A system responsible for adding, updating and maintaining encounter information about a patient. It supplies new and updated information to the Patient Encounter Consumer. It must be grouped with either the Patient Demographics Source or the Patient Demographics Consumer. 
                        

This actor assembles the content of the media and writes it to the physical medium.
                        

This actor reads the information contained on the media. This system provides the user the ability to select a set of instances and reconcile key patient and study attributes (when necessary) to facilitate inclusion of the imported data in the local information system(s).