DICOM PS3.10 2019e - Media Storage and File Format for Media Interchange

3 Definitions (Current)
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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].

  ### Note

  The definition is "the property that information is not made available or disclosed to unauthorized individuals, entities or processes."

Data Origin Authentication

  See [ISO 7498-2].

  ### Note

  The definition is "the corroboration that the source of data received is as claimed."

Data Integrity

  See [ISO 7498-2].

  ### Note

  The definition is "the property that data has not been altered or destroyed in an 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 Class)

  Service-Object Pair Class (SOP Class).

## 3.5 DICOM Information Object Definitions

This Part of the Standard makes use of the following terms defined in PS3.3:

Information Object Definition (IOD)

  Information Object Definition.

## 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 (SOP Instance)

  Service-Object Pair Instance (SOP Instance).

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 DICOM Media Storage Model that are applicable to a specific need or context in which the media 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 Format Layer. Constraining access to the content of files by the Application Entities through such 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 DICOM Standard. In particular such files shall contain, the File Meta Information and a properly formatted Data Set.

DICOMDIR File

  A unique and mandatory DICOM File within a File-set that contains the Media Storage Directory 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 file and the last byte at the end of the File. Files are identified by a unique File ID and may by 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 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.

File Meta Information

  The File Meta Information includes identifying information on the encapsulated Data Set. It is a mandatory header at the beginning of every DICOM File.

File-set

  A File-set is a collection of DICOM Files (and possibly non-DICOM Files) that share a common naming space within which File IDs are unique.

File-set Creator

  An Application Entity that creates the DICOMDIR File (see Section 8.6) and zero or more DICOM Files.

File-set Reader

  An Application Entity that accesses one or more files in a File-set.

File-set Updater

  An Application Entity that accesses Files, creates additional Files, or deletes existing Files in a File-set. A File-set Updater makes the appropriate alterations to the DICOMDIR file reflecting the additions or deletions.

DICOM File Format

  The DICOM File Format provides a means to encapsulate in a File the Data Set representing a SOP Instance related to a DICOM Information Object.

Media Format

  Data structures and associated policies that organize the bit streams defined by the Physical Media format into data file structures and associated file directories.

Media Storage Model

  The DICOM Media Storage Model pertains to the data structures used at different layers to achieve interoperability through media interchange.

Media Storage Services

  DICOM Media Storage Services define a set of operations with media that facilitate storage to and retrieval from the media of DICOM SOP Instances.

Physical Media

  A piece of material with recording capabilities for streams of bits. Characteristics of a Physical Media include form factor, mechanical characteristics, recording properties and rules for recording and organizing bit streams in accessible structures

Secure DICOM File

  A DICOM File that is encapsulated with the Cryptographic Message Syntax specified in RFC2630.

Secure File-set

  A File-set in which all DICOM Files are Secure DICOM Files.

Secure Media Storage Application Profile

  A DICOM Media Storage Application Profile that requires a Secure File-set.

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DICOM PS3.10 2019e - Media Storage and File Format for Media Interchange