As association is the DICOM term for a network connection between two applications, one of which is the Service Class User (SCU - client) and the other is the Service Class Provider (SCP - server).

DICOM services use a limited number of basic DICOM operations (officially called DIMSE operations), all of which are of course supported by DicomObjects.

A Composite Instance is the official DICOM term for a persistent storable object.

PACS, picture archiving and communication systems, is a term used for a set of computers connected by a network, and dedicated to the storage, retrieval, distribution, and presentation of medical images.

Transfer Syntax is the language used in DICOM to describe the DICOM file format and the network transfer methods.

Why Private Data Element Implementations may require communication of information that cannot be contained in Standard Data Elements.