Материал: part05
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Undefined Length |
The ability to specify an unknown length for a Data Element Value (of Value Representation SQ, |
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UN, OW, or OB) or Item. Data Elements and Items of Undefined Length are delimited with |
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Sequence Delimitation Items and Item Delimiter Data Elements, respectively. |
Unique Identifier (UID) |
A string of characters used to provide global unique identification of a wide variety of items, |
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guaranteeing uniqueness across multiple countries, sites, vendors and equipment. It uses the |
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structure defined by [ISO/IEC 8824] for OSI Object Identifiers. |
Value |
A component of a Value Field. A Value Field may consist of one or more of these components. |
Value Field |
The field within a Data Element that contains the Value(s) of that Data Element. |
Value Length |
The field within a Data Element that contains the length of the Value Field of the Data Element. |
Value Multiplicity (VM) |
Specifies the number of Values contained in the Value Field of a Data Element. |
Value Representation (VR) |
SpecifiesthedatatypeandformatoftheValue(s)containedintheValueFieldofaDataElement. |
Value Representation Field |
The field where the Value Representation of a Data Element is stored in the encoding of a Data |
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Element structure with explicit VR. |
3.11 Character Handling Definitions
This Part of the Standard makes use of the following terms defined in [ISO/IEC 2022]
Coded Character Set |
See [ISO/IEC 2022]. |
Code Extension |
See [ISO/IEC 2022]. |
Control Character |
See [ISO/IEC 2022]. |
To Designate |
See [ISO/IEC 2022]. |
Escape Sequence |
See [ISO/IEC 2022]. |
Graphic Character |
See [ISO/IEC 2022]. |
To Invoke |
See [ISO/IEC 2022]. |
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4 Symbols and Abbreviations
The following symbols and abbreviations are used in this Standard.
ACR |
American College of Radiology |
AE |
Application Entity |
ANSI |
American National Standards Institute |
AVC |
Advanced Video Coding |
CEN TC251Comité Européen de Normalisation - Technical Committee 251 - Healthcare Informatics
DICOM |
Digital Imaging and Communications in Medicine |
HEVC |
High Efficiency Video Coding |
HISPP |
Healthcare Information Standards Planning Panel |
HL7 |
Healthcare Industry Level 7 Interface Standards |
IEEE |
Institute of Electrical and Electronics Engineers |
IOD |
Information Object Definition |
ISO |
International Standards Organization |
JPEG |
Joint Photographic Experts Group |
JIRA |
Japan Medical Imaging and Radiological Systems Industries Association |
MPEG |
Moving Picture Experts Group |
MSDS |
Healthcare Message Standard Developers Sub-Committee |
NEMA |
National Electrical Manufacturers Association |
OSI |
Open Systems Interconnection |
RLE |
Run Length Encoding |
TCP/IP |
Transmission Control Protocol/Internet Protocol |
UID |
Unique Identifier |
SOP |
Service-Object Pair |
UTC |
Coordinated Universal Time |
URI/URL |
Uniform Resource Identifier/Locator |
VM |
Value Multiplicity |
VR |
Value Representation |
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5 Conventions
Word(s)arecapitalizedinthisdocument(notheadings)tohelpthereaderunderstandthattheseword(s)havebeenpreviouslydefined in Section 3 of this document and are to be interpreted with that meaning.
The Data Element Tag is represented as (gggg,eeee), where gggg equates to the Group Number and eeee equates to the Element NumberwithinthatGroup.TheDataElementTagisrepresentedinhexadecimalnotationasspecifiedforeachDataElementinPS3.6.
The notation XXXXH, where XXXX is one or more hexadecimal digits, and "H" is used to signify a hexadecimal number.
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