4 Symbols and Abbreviations
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# 4 Symbols and Abbreviations

The following symbols and abbreviations are used in this Part of the Standard.

ANSI

  American National Standards Institute

CDA

  Clinical Document Architecture (HL7)

DICOM

  Digital Imaging and Communications in Medicine

HL7

  Health Level 7

HMD

  Hierarchical Message Description (HL7)

II

  Instance Identifier (HL7)

IOD

  Information Object Definition

ISO

  International Standards Organization

NEMA

  National Electrical Manufacturers Association

OID

  Object Identifier (ISO 8824)

SNOMED

  Systematized Nomenclature of Medicine

SR

  Structured Reporting

UCUM

  Unified Code for Units of Measure

UID

  Unique Identifier

XML

  Extensible Markup Language

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