DICOM PS3.7 2018d - Message Exchange

D.3.2 Presentation Contexts Negotiation (Current)
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### D.3.2 Presentation Contexts Negotiation

A Presentation Context defines the presentation of the data on an Association. It provides a lower level of negotiation and one or more Presentation Contexts can be offered and accepted per Association.

A Presentation Context consists of three components, a Presentation Context ID, an Abstract Syntax Name, and a list of one or more Transfer Syntax Names.

Only one Abstract Syntax shall be offered per Presentation Context. However, multiple Transfer Syntaxes may be offered per Presentation Context, but only one shall be accepted.

For each SOP Class or Meta SOP Class a Presentation Context must be negotiated such that this Presentation Context supports the associated Abstract Syntax and a suitable Transfer Syntax. Presentation Contexts will be identified within the scope of a specific Association by a Presentation Context ID.

Figure D.3-1 provides an illustration of Presentation Context Negotiation with the key points as follows:

1. the Association-requester may offer multiple Presentation Contexts per Association.

2. each Presentation Context supports one Abstract Syntax (related to a SOP Class or Meta SOP Class) and one or more Transfer Syntaxes.

3. the Association-acceptor may accept or reject each Presentation Context individually.

4. the Association-acceptor selects a suitable Transfer Syntax for each Presentation Context accepted.

Figure D.3-1. Presentation Contexts Negotiation

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DICOM PS3.7 2018d - Message Exchange