SCU

Acronym for “Service Class User”. Synonym for “Client” in general computing terminology.

SCP

Acronym for “Service Class Provider”. Synonym for “Server” in general computing terminology.

Presentation Context

A combination of a SOP Class and Transfer Syntax that is agreed upon between two applications during the association negotiation phase. The transfer syntax is used to serialize the commands and data objects of the service throughout the association.

C-STORE

A DIMSE Command that sends a DICOM Object (e.g. Image) from one application (Storage SCU) to another (Storage SCP). The C-STORE command is used in the “Storage Service”.

C-MOVE

A DIMSE Command that does the following: “Application A asks application B to send DICOM Instances stored in Application B to Application C”. Application C may or may not be application A itself. When Application B receives the C-MOVE Request it initiates communication with Application C and then performs C-STORE commands for every instance that matches [...]

C-GET

An obsolete DIMSE Command for retrieving DICOM Instances using matching criteria. C-GET is similar to C-MOVE but instead of starting a new association, the instances are sent over the same connection as responses.

C-ECHO

A DIMSE Command that is used for the verification service that verifies communication between two DICOM Applications. AKA “DICOM ping”.

Application Entity (AE) Title

A unique name of a node in the DICOM network Every DICOM AE has a table where the other AE’s are configured with their host name or IP address and the port they are listening on.

Association

A network session between two DICOM Application. An association is a two phases process. The first phase is the negotiation where the context of the session is negotiated and the second phase is the actual command exchange.

Abstract Syntax

Abstract Syntax A Synonym for SOP Class in the context of Association Negotiation.