Enum: DICOMValueRepresentationEnum
The Value Representations (VRs) defined in DICOM PS3.5 Section 6.2, which specify the data type and format of the value of a data element. Tag validation tools check that each attribute is encoded with the VR required by the data dictionary. Permissible values are the two-letter DICOM VR codes.
URI: valuesets:DICOMValueRepresentationEnum
Permissible Values
| Value | Title | Meaning | Description | Category |
|---|---|---|---|---|
| AE | Application Entity | A string identifying an Application Entity; 16 bytes maximum | string | |
| AS | Age String | Age in the format nnnD, nnnW, nnnM or nnnY (days, weeks, months, years) | string | |
| AT | Attribute Tag | An ordered pair of 16-bit unsigned integers that is the value of a data element tag | binary | |
| CS | Code String | A string identifying a controlled concept; uppercase letters, digits, space and underscore, 16 bytes maximum | string | |
| DA | Date | A date in the format YYYYMMDD | date_time | |
| DS | Decimal String | A string representing a fixed point or floating point number | string | |
| DT | Date Time | A concatenated date-time string of the form YYYYMMDDHHMMSS.FFFFFF&ZZXX | date_time | |
| FL | Floating Point Single | Single precision IEEE 754 binary32 floating point value | binary | |
| FD | Floating Point Double | Double precision IEEE 754 binary64 floating point value | binary | |
| IS | Integer String | A string representing a base-10 integer | string | |
| LO | Long String | A character string of up to 64 characters | string | |
| LT | Long Text | A character string that may contain one or more paragraphs, up to 10240 characters | text | |
| OB | Other Byte | An octet stream whose encoding is specified by the negotiated transfer syntax | binary | |
| OD | Other Double | A stream of IEEE 754 binary64 values | binary | |
| OF | Other Float | A stream of IEEE 754 binary32 values | binary | |
| OL | Other Long | A stream of 32-bit words | binary | |
| OV | Other 64-bit Very Long | A stream of 64-bit words | binary | |
| OW | Other Word | A stream of 16-bit words; commonly used for Pixel Data | binary | |
| PN | Person Name | A character string encoded using a five-component convention (family, given, middle, prefix, suffix) | string | |
| SH | Short String | A character string of up to 16 characters | string | |
| SL | Signed Long | Signed 32-bit two's complement integer | binary | |
| SQ | Sequence of Items | A sequence of zero or more items, each of which is a nested data set | sequence | |
| SS | Signed Short | Signed 16-bit two's complement integer | binary | |
| ST | Short Text | A character string that may contain one or more paragraphs, up to 1024 characters | text | |
| SV | Signed 64-bit Very Long | Signed 64-bit integer | binary | |
| TM | Time | A time in the format HHMMSS.FFFFFF | date_time | |
| UC | Unlimited Characters | A character string of unlimited length | string | |
| UI | Unique Identifier (UID) | A string of numeric components separated by periods, up to 64 characters, used for UIDs such as SOP Instance UIDs and transfer syntax UIDs | string | |
| UL | Unsigned Long | Unsigned 32-bit integer | binary | |
| UN | Unknown | An octet stream whose encoding of the contents is unknown | binary | |
| UR | Universal Resource Identifier or Universal Resource Locator (URI/URL) | A string identifying a URI or URL as defined in RFC 3986 | string | |
| US | Unsigned Short | Unsigned 16-bit integer | binary | |
| UT | Unlimited Text | A character string that may contain one or more paragraphs, of unlimited length | text | |
| UV | Unsigned 64-bit Very Long | Unsigned 64-bit integer | binary |
Slots
| Name | Description |
|---|---|
| dicom_value_representation | The DICOM Value Representation (VR) of an attribute |
See Also
Identifier and Mapping Information
Schema Source
- from schema: https://w3id.org/valuesets
LinkML Source
name: DICOMValueRepresentationEnum
instantiates:
- valuesets_meta:ValueSetEnumDefinition
description: The Value Representations (VRs) defined in DICOM PS3.5 Section 6.2, which
specify the data type and format of the value of a data element. Tag validation
tools check that each attribute is encoded with the VR required by the data dictionary.
Permissible values are the two-letter DICOM VR codes.
title: DICOM Value Representation
from_schema: https://w3id.org/valuesets
see_also:
- https://dicom.nema.org/medical/dicom/current/output/chtml/part05/sect_6.2.html
contributors:
- orcid:0000-0002-6601-2165
- https://github.com/anthropics/claude-code
status: DRAFT
rank: 1000
permissible_values:
AE:
text: AE
description: A string identifying an Application Entity; 16 bytes maximum
annotations:
category:
tag: category
value: string
title: Application Entity
AS:
text: AS
description: Age in the format nnnD, nnnW, nnnM or nnnY (days, weeks, months,
years)
annotations:
category:
tag: category
value: string
title: Age String
AT:
text: AT
description: An ordered pair of 16-bit unsigned integers that is the value of
a data element tag
annotations:
category:
tag: category
value: binary
title: Attribute Tag
CS:
text: CS
description: A string identifying a controlled concept; uppercase letters, digits,
space and underscore, 16 bytes maximum
annotations:
category:
tag: category
value: string
title: Code String
DA:
text: DA
description: A date in the format YYYYMMDD
annotations:
category:
tag: category
value: date_time
title: Date
DS:
text: DS
description: A string representing a fixed point or floating point number
annotations:
category:
tag: category
value: string
title: Decimal String
DT:
text: DT
description: A concatenated date-time string of the form YYYYMMDDHHMMSS.FFFFFF&ZZXX
annotations:
category:
tag: category
value: date_time
title: Date Time
FL:
text: FL
description: Single precision IEEE 754 binary32 floating point value
annotations:
category:
tag: category
value: binary
title: Floating Point Single
FD:
text: FD
description: Double precision IEEE 754 binary64 floating point value
annotations:
category:
tag: category
value: binary
title: Floating Point Double
IS:
text: IS
description: A string representing a base-10 integer
annotations:
category:
tag: category
value: string
title: Integer String
LO:
text: LO
description: A character string of up to 64 characters
annotations:
category:
tag: category
value: string
title: Long String
LT:
text: LT
description: A character string that may contain one or more paragraphs, up to
10240 characters
annotations:
category:
tag: category
value: text
title: Long Text
OB:
text: OB
description: An octet stream whose encoding is specified by the negotiated transfer
syntax
annotations:
category:
tag: category
value: binary
title: Other Byte
OD:
text: OD
description: A stream of IEEE 754 binary64 values
annotations:
category:
tag: category
value: binary
title: Other Double
OF:
text: OF
description: A stream of IEEE 754 binary32 values
annotations:
category:
tag: category
value: binary
title: Other Float
OL:
text: OL
description: A stream of 32-bit words
annotations:
category:
tag: category
value: binary
title: Other Long
OV:
text: OV
description: A stream of 64-bit words
annotations:
category:
tag: category
value: binary
title: Other 64-bit Very Long
OW:
text: OW
description: A stream of 16-bit words; commonly used for Pixel Data
annotations:
category:
tag: category
value: binary
title: Other Word
PN:
text: PN
description: A character string encoded using a five-component convention (family,
given, middle, prefix, suffix)
annotations:
category:
tag: category
value: string
title: Person Name
SH:
text: SH
description: A character string of up to 16 characters
annotations:
category:
tag: category
value: string
title: Short String
SL:
text: SL
description: Signed 32-bit two's complement integer
annotations:
category:
tag: category
value: binary
title: Signed Long
SQ:
text: SQ
description: A sequence of zero or more items, each of which is a nested data
set
annotations:
category:
tag: category
value: sequence
title: Sequence of Items
SS:
text: SS
description: Signed 16-bit two's complement integer
annotations:
category:
tag: category
value: binary
title: Signed Short
ST:
text: ST
description: A character string that may contain one or more paragraphs, up to
1024 characters
annotations:
category:
tag: category
value: text
title: Short Text
SV:
text: SV
description: Signed 64-bit integer
annotations:
category:
tag: category
value: binary
title: Signed 64-bit Very Long
TM:
text: TM
description: A time in the format HHMMSS.FFFFFF
annotations:
category:
tag: category
value: date_time
title: Time
UC:
text: UC
description: A character string of unlimited length
annotations:
category:
tag: category
value: string
title: Unlimited Characters
UI:
text: UI
description: A string of numeric components separated by periods, up to 64 characters,
used for UIDs such as SOP Instance UIDs and transfer syntax UIDs
annotations:
category:
tag: category
value: string
title: Unique Identifier (UID)
UL:
text: UL
description: Unsigned 32-bit integer
annotations:
category:
tag: category
value: binary
title: Unsigned Long
UN:
text: UN
description: An octet stream whose encoding of the contents is unknown
annotations:
category:
tag: category
value: binary
title: Unknown
UR:
text: UR
description: A string identifying a URI or URL as defined in RFC 3986
annotations:
category:
tag: category
value: string
title: Universal Resource Identifier or Universal Resource Locator (URI/URL)
US:
text: US
description: Unsigned 16-bit integer
annotations:
category:
tag: category
value: binary
title: Unsigned Short
UT:
text: UT
description: A character string that may contain one or more paragraphs, of unlimited
length
annotations:
category:
tag: category
value: text
title: Unlimited Text
UV:
text: UV
description: Unsigned 64-bit integer
annotations:
category:
tag: category
value: binary
title: Unsigned 64-bit Very Long