| DICOM PS3.18 2024d - Web Services |
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This section defines the media types used to represent DICOM Instances, Metadata and Bulkdata. It describes:
The media type and Transfer Syntax parameters for DICOM PS3.10 Instances
The media types and Transfer Syntaxes parameters for Bulkdata
The syntax of DICOM Media Types including their Transfer Syntax and character set parameters
The meaning of Acceptable Transfer Syntaxes and Selected Transfer Syntax
The media types defined in this section are distinct from those into which DICOM Instances may be rendered (which are defined in Section 8.7.4); some of the same media types are used for both rendered content and Bulkdata.
Depending on the service, the media types may be single part or multipart, and may have required or optional Transfer Syntax and/or character set parameters.
The Implicit VR Little Endian (1.2.840.10008.1.2), and Explicit VR Big Endian (1.2.840.10008.1.2.2 - Retired) Transfer Syntaxes shall not be used with Web Services.
If a Transfer Syntax parameter for a DICOM Media Type is not specified in a request or response, the Transfer Syntax in the response shall be the Transfer Syntax specified as the default for the Resource Category and media type combination in Table 8.7.3-2, Table 8.7.3-4 or Table 8.7.3-5, unless the origin server has only access to the pixel data in lossy compressed form or the pixel data in a lossless compressed or encapsulated uncompressed form that is of such length that it cannot be encoded in the Explicit VR Little Endian Transfer Syntax.
Table 8.7.3-1 specifies the definition of media type requirement terms used in the tables in this section.
Table 8.7.3-1. Definition of Media Type Requirement
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The origin server shall return this media type when none of the Acceptable Media Types (see Section 8.7.5) are supported. The origin server shall support this media type. |
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Table 8.7.3-2, Table 8.7.3-3, Table 8.7.3-4, and Table 8.7.3-5 specify the media types used to encode different representations of DICOM Instances. These media types apply to all Resource Categories and have default encodings for images and video data elements contained in the Instances.
The application/dicom media type specifies a representation of Instances encoded in the DICOM File Format specified in Section 7 “DICOM File Format” in PS3.10.
The origin server may populate the PS3.10 File Meta Information with the identification of the Source, Sending and Receiving AE Titles and Presentation Addresses as described in Section 7.1 in PS3.10 , or these Attributes may have been left unaltered from when the origin server received the objects. The user agent storing the objects received in the response may populate or coerce these Attributes based on its own knowledge of the endpoints involved in the transaction, so that they accurately identify the most recent storage transaction.
Table 8.7.3-2 specifies the default and optional Transfer Syntax UID combinations for each DICOM Resource Category (see Table 8.7.2-1). The default media type for the Resource Category shall be returned when the origin server supports none of the Acceptable Media Types, unless the origin server has only access to the pixel data in lossy compressed form or the pixel data in a lossless compressed or encapsulated uncompressed form that is of such length that it cannot be encoded in the Explicit VR Little Endian Transfer Syntax.
Table 8.7.3-2. Transfer Syntax UIDs for application/dicom Media Types
| DICOM PS3.18 2024d - Web Services |
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