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3 Definitions
For the purposes of this Standard the following definitions apply.
3.1 Reference Model Definitions
This Part of the Standard use of the following terms defined in [ISO 7498-1] and [ISO 7498-2]:
Application Entity |
See [ISO 7498-1]. |
Application Process |
See [ISO 7498-1]. |
Service |
See [ISO 7498-1]. |
Transfer Syntax |
See [ISO 7498-1]. |
Data Confidentiality |
See [ISO 7498-2]. |
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Note |
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The definition is "the property that information is not made available or disclosed to |
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unauthorized individuals, entities or processes." |
Data Origin Authentication |
See [ISO 7498-2]. |
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Note |
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The definition is "the corroboration that the source of data received is as claimed." |
Data Integrity |
See [ISO 7498-2]. |
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Note |
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The definition is "the property that data has not been altered or destroyed in an |
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unauthorized manner." |
3.2 Service Conventions Definitions
This Part of the Standard makes use of the following terms defined in [ISO/TR 8509]:
Service Provider |
See [ISO/TR 8509]. |
Service User |
See [ISO/TR 8509]. |
3.3 Presentation Service Definitions
This Part of the Standard makes use of the following terms defined in [ISO 8822]:
Abstract Syntax |
See [ISO 8822]. |
Abstract Syntax Name |
See [ISO 8822]. |
3.4 DICOM Introduction and Overview Definitions
This Part of the Standard makes use of the following terms defined in PS3.1:
Attribute Attribute.
Service-Object Pair Class (SOP Service-Object Pair Class (SOP Class).
Class)
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Page 18 DICOM PS3.10 2020a - Media Storage and File Format for Media Interchange
3.5 DICOM Information Object Definitions
This Part of the Standard makes use of the following terms defined in PS3.3:
Information Object Definition |
Information Object Definition. |
(IOD) |
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3.6 DICOM Data Structure and Encoding Definitions
This Part of the Standard makes use of the following terms defined in PS3.5:
Data Element |
Data Element. |
Data Set |
Data Set. |
Data Element Type |
Data Element Type. |
Value |
Value. |
Value Multiplicity |
Value Multiplicity (VM). |
Value Representation |
Value Representation (VR). |
3.7 DICOM Message Exchange Definitions
This Part of the Standard makes use of the following terms defined in PS3.7:
Service Object Pair Instance |
Service-Object Pair Instance (SOP Instance). |
(SOP Instance) |
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Implementation Class UID |
Implementation Class UID. |
3.8 DICOM Media Storage and File Format Definitions
The following definitions are commonly used in this Part of the Standard:
Application Profile |
A Media Storage Application Profile defines a selection of choices at the various layers of the |
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DICOM Media Storage Model that are applicable to a specific need or context in which the media |
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interchange is intended to be performed. |
DICOM File Service |
The DICOM File Service specifies a minimum abstract view of files to be provided by the Media |
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Format Layer. Constraining access to the content of files by the Application Entities through such |
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a DICOM File Service boundary ensures Media Format and Physical Media independence. |
DICOM File |
A DICOM File is a File with a content formatted according to the requirements of this Part of the |
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DICOM Standard. In particular such files shall contain, the File Meta Information and a properly |
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formatted Data Set. |
DICOMDIR File |
A unique and mandatory DICOM File within a File-set that contains the Media Storage Directory |
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SOP Class. This File is given a single component File ID, DICOMDIR. |
File |
A File is an ordered string of zero or more bytes, where the first byte is at the beginning of the |
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file and the last byte at the end of the File. Files are identified by a unique File ID and may by |
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written, read and/or deleted. |
File ID |
Files are identified by a File ID that is unique within the context of the File-set they belong to. A |
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set of ordered File ID Components (up to a maximum of eight) forms a File ID. |
File ID Component |
A string of one to eight characters of a defined character set. |
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File Meta Information |
The File Meta Information includes identifying information on the encapsulated Data Set. It is a |
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mandatory header at the beginning of every DICOM File. |
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File-set |
A File-set is a collection of DICOM Files (and possibly non-DICOM Files) that share a common |
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naming space within which File IDs are unique. |
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File-set Creator |
AnApplicationEntitythatcreatestheDICOMDIRFile(seeSection8.6)andzeroormoreDICOM |
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Files. |
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File-set Reader |
An Application Entity that accesses one or more files in a File-set. |
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File-set Updater |
An Application Entity that accesses Files, creates additional Files, or deletes existing Files in a |
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File-set. A File-set Updater makes the appropriate alterations to the DICOMDIR file reflecting the |
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additions or deletions. |
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DICOM File Format |
The DICOM File Format provides a means to encapsulate in a File the Data Set representing a |
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SOP Instance related to a DICOM Information Object. |
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Media Format |
Data structures and associated policies that organize the bit streams defined by the Physical |
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Media format into data file structures and associated file directories. |
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Media Storage Model |
The DICOM Media Storage Model pertains to the data structures used at different layers to |
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achieve interoperability through media interchange. |
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Media Storage Services |
DICOM Media Storage Services define a set of operations with media that facilitate storage to |
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and retrieval from the media of DICOM SOP Instances. |
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Physical Media |
A piece of material with recording capabilities for streams of bits. Characteristics of a Physical |
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Mediaincludeformfactor,mechanicalcharacteristics,recordingpropertiesandrulesforrecording |
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and organizing bit streams in accessible structures |
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Secure DICOM File |
ADICOMFilethatisencapsulatedwiththeCryptographicMessageSyntaxspecifiedinRFC2630. |
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Secure File-set |
A File-set in which all DICOM Files are Secure DICOM Files. |
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Secure Media Storage |
A DICOM Media Storage Application Profile that requires a Secure File-set. |
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Application Profile |
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