Describes the services that DICOM applications can render to each other; they encode SOPs supported on the communicating AEs.
Generally equivalent to a SOP class
, the specification used to define the information to exchange in a message; does not represent a specific instance of the data object, but rather a class of similar data objects that have the same properties. Examples: MR image storage, CT image storage, MWL.
application entity title (AET)
A unit of information as defined by a single entry in the data dictionary. An encoded Information Object Definition (IOD) Attribute that is composed of, at a minimum, three fields: a Data Element Tag, a Value Length, and a Value Field. For some specific Transfer Syntaxes, a Data Element also contains a VR Field where the Value Representation of that Data Element is specified explicitly.
picture archiving and communication system (PACS)
radiology information system (RIS)
service class provider (SCP)
service-object pair (SOP)
service-object pair (SOP) class
service object pair (SOP) instance
transfer syntax (standard and private)
Encoding used for exchange of DICOM information objects and messages. Allows application entities to unambiguously negotiate the encoding techniques they are able to support (for example, data element structure, byte ordering, compression), thereby allowing these application entities to communicate.
value representation (VR)
Format type of an individual DICOM data element, such as text, an integer, a person’s name, or a code. DICOM information objects can be transmitted with either explicit identification of the type of each data element (Explicit VR), or without explicit identification (Implicit VR). With Implicit VR, the receiving application must use a DICOM data dictionary to look up the format of each data element.