Terms
DICOM GSPS (Gray Scale Presentation State)	A DICOM object type that can be used to share presentation state via the IHE CPI Profile [6].
EOC (Episode of Care)	The time corresponding to when the patient entered the health care provider (admission) and their leaving (discharge). These events are broadcast by the Reg/ADT actor in a facility.
IHE (Integration of the Health Care Enterprise)	A consortium of interests that have defined the use cases for major workflows within health care institutions and how actual products “Actors” facilitate those workflows [7].
IHE Actor	A device that performs the various workflows assigned to it by the IHE technical frameworks and the Integration Profiles therein. For example: Image Archive, Image Manager, Image Viewer, etc.
IHE CPI (Consistent Presentation of Images)	An Integration Profile that assures that presentation state information is shared among all image viewer Actors so that all users experience the same image appearance [8].
IHE Integration Profiles	The name given to specific workflows that document the messages exchanged among actors to perform the indicated task.
MPI (Master Patient Index)	A universal mapping of all local patient identifiers across an Enterprise to a common identifier.
PACS (Picture Archive and Communication System)	Receives its orders from the RIS. The order also maps to a study which may or may not have images. Statuses are: New, In Progress, QA’ed (like RIS Complete) but Unread (goes into Unread Worklist), prelim Read, Final Read, and Archived.
PACS STS (Short Term Storage)	An image cache on PACS, sized to only 30–60 days for an exam’s time to live before flushing. Alternately, flushing can be triggered when the patient is discharged and the Episode of Care for that patient is closed.
PIX (Patient Identifier Cross Referencing Integration Profile)	The PIX profile assures that a patient’s local ID can be cross-referenced to a Master ID (the MPI) and hence tied to any other IDs that happened to be aliased to the patient throughout the MPI’s domain [9].
Reg/ADT (Registration/Admission/Discharge/Transfer)	The system that captures patient demographics, tracks their location within a medical center, and logs the patient discharge from the facility.
XDS (Cross Enterprise Document Sharing Integration Profile)	For members of an Affinity Domain (a group of providers that agree to work together), XDS, combined with PIX, enable a standard format for representing the patient’s medical record [10].
RIS (Radiology Information System)	Receives orders from external systems or within the department. The order maps to a study that can have the statuses: New, Arrived, Complete, Preliminary report, and Final report.