3 Definitions

For the purposes of this Standard the following definitions apply.

3.1 Reference model definitions

This part of the Standard is based on the concepts developed in ISO 7498-1 and makes use of the following terms defined in it:

a) Application Entity

b) Application Process

c) Protocol or Layer Protocol

d) Protocol Data Unit or Layer Protocol Data Unit

e) Service or Layer Service

f) Transfer Syntax

3.2 Service conventions definitions

This part of the Standard makes use of the following terms defined in ISO/TR 8509:

a) Service Provider

b) Service User

c) Confirmed Service

d) Non-confirmed Service

e) Primitive

f) Request (Primitive)

g) Indication (Primitive)

h) Response (Primitive)

i) Confirm (Primitive)

3.3 PRESENTATION SERVICE DEFINITIONS

This part of the Standard makes use of the following terms defined in ISO 8822:

a) Abstract Syntax

b) Abstract Syntax Name

c) Presentation Context

d) Presentation Data Values

3.4 ACSE service definitions

This part of the Standard makes use of the following terms defined in ISO 8649:

a) Association or Application Association

b) Application Context

c) Association Control Service Element

d) Association Initiator

3.5 CMIS service definitions

This part of the Standard makes use of the following terms defined in ISO 9595:

a) Functional Unit

b) Kernel Functional Unit

3.6 DICOM introduction and overview definitions

This part of the Standard makes use of the following terms defined in PS 3.1:

a) Attribute

b) Command

c) Command Stream

d) Data Stream

e) Message

3.7 DICOM upper layer service definitions

This part of the Standard makes use of the following terms defined in PS 3.8:

a) Unique Identifier (UID)

b) DICOM Upper Layer

3.8 DICOM service class definitions

This part of the Standard makes use of the following terms defined in PS 3.4:

a) Service Class

b) Service Class User (SCU)

c) Service Class Provider (SCP)

d) Service-Object Pair (SOP) Class

e) Service-Object Pair (SOP) Instance

f) Related General SOP Class

3.9 DICOM data structures and encoding definitions

This part of the Standard makes use of the following terms defined in PS 3.5:

a) Data Element

b) Data Set

3.10 DICOM message exchange definitions

The following definitions are commonly used in this part of the Standard:

DICOM message service element (DIMSE): the particular Application Service Element defined in this Part of the DICOM Standard.

DIMSE-C services: A subset of the DIMSE services which supports operations on Composite SOP Instances related to composite Information Object Definitions with peer DIMSE-service-users.

DIMSE-N services: a subset of the DIMSE services which supports operations and notifications on Normalized SOP Instances related to Normalized Information Object Definitions with peer DIMSE-service-users.

DIMSE-service-provider: an abstraction of the totality of those entities which provide DIMSE services to peer DIMSE-service-users.

DIMSE-service-user: that part of an application entity which makes use of the DICOM Message Service Element.

Invoking DIMSE-service-user: the DIMSE-service-user that invokes a DIMSE operation or notification.

Performing DIMSE-service-user: the DIMSE-service-user that performs a DIMSE operation or notification invoked by a peer DIMSE-service-user.