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Harris Geospatial / Docs Center / IDL Reference / DICOM Toolkit / DICOM Attributes

DICOM Attributes

DICOM Attributes

A DICOM attribute or data element is composed of the following parts:

  • A tag, in the format of group, element (XXXX,XXXX) that identifies the element
  • A Value Representation (VR) that describes the data type and format of the attribute’s value
  • A value length that defines the length of the attribute’s value
  • A value field containing the attribute’s data

The basic attribute structure is shown in the following figure:

Each data element is described by a pair of numbers (group number, data element number). Even numbered groups are elements defined by the DICOM standard and are referred to as public tags. Odd numbered groups can be defined by users of the file format, but must conform to the same structure as standard elements. These are referred to as private tags.

Note: This section does not contain a comprehensive IOD list for each modality. Visit http://dicom.nema.org/standard.html for additional DICOM information including access to the complete standard.

The following table lists the DICOM attributes organized by attribute name. This information comes from the 2001 NEMA DICOM Standard (http://medical.nema.org/dicom/2001.html). See Value Representations for definitions of the VR items.

To search for an attribute, click in the table, press Ctrl + F, enter the text or number, and click Find Next. Or, search the attribute name by letter:

A | B | CDEFG | HI | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | YZ

Attribute Name

VR

Tag

Accession Number

SH

(0008,0050)

Acquisition Context Description

ST

(0040,0556)

Acquisition Context Sequence

SQ

(0040,0555)

Acquisition Date

DA

(0008,0022)

Acquisition Datetime

DT

(0008,002A)

Acquisition Device Processing Code

LO

(0018,1401)

Acquisition Device Processing
Description

LO

(0018,1400)

Acquisition Matrix

US

(0018,1310)

Acquisition Number

IS

(0020,0012)

Acquisition Start Condition

CS

(0018,0073)

Acquisition Start Condition Data

IS

(0018,0074)

Acquisition Termination Condition

CS

(0018,0071)

Acquisition Termination Condition
Data

IS

(0018,0075)

Acquisition Time

TM

(0008,0032)

Acquisition Time Synchronized

CS

(0018,1800)

Acquisitions in Study

IS

(0020,1004)

Active Source Diameter

DS

(300A,0218)

Active Source Length

DS

(300A,021A)

Actual Frame Duration

IS

(0018,1242)

Actual Human Performers Sequence

SQ

(0040,4035)

Additional Drug Sequence

SQ

(0018,002A)

Additional Patient History

LT

(0010,21B0)

Administration Route Code
Sequence

SQ

(0054,0302)

Admission ID

LO

(0038,0010)

Admitting Date

DA

(0038,0020)

Admitting Diagnoses Code Sequence

SQ

(0008,1084)

Admitting Diagnoses Description

LO

(0008,1080)

Admitting Time

TM

(0038,0021)

Air Kerma Rate Reference Date

DA

(300A,022C)

Air Kerma Rate Reference Time

TM

(300A,022E)

Anatomic Region Modifier Sequence

SQ

(0008,2220)

Anatomic Region Sequence

SQ

(0008,2218)

Anatomic Structure, Space or Region
Sequence

SQ

(0008,2229)

Anchor Point

FL

(0070,0014)

Anchor Point Annotation Units

CS

(0070,0004)

Anchor Point Visibility

CS

(0070,0015)

Angio Flag

CS

(0018,0025)

Angular Position

DS

(0018,1141)

Angular Step

DS

(0018,1144)

Angular View Vector

US

(0054,0090)

Annotation Content Sequence

SQ

(2130,0050)

Annotation Display Format ID

CS

(2010,0030)

Annotation Flag

CS

(2000,0065)

Annotation Group Number

US

(0040,A180)

Annotation Position

US

(2030,0010)

Annotation Sequence

SQ

(0040,B020)

Anode Target Material

CS

(0018,1191)

Applicable Frame Range

US

(0028,6102)

Application Setup Check

CS

(3008,0116)

Application Setup Manufacturer

LO

(300A,0238)

Application Setup Name

LO

(300A,0236)

Application Setup Number

IS

(300A,0234)

Application Setup Sequence

SQ

(300A,0230)

Application Setup Type

CS

(300A,0232)

Applicator Description

LO

(300A,010A)

Applicator ID

SH

(300A,0108)

Applicator Sequence

SQ

(300A,0107)

Applicator Type

CS

(300A,0109)

Approval Status

CS

(300E,0002)

Attached Contours

IS

(3006,0049)

Attenuation Correction Method

LO

(0054,1101)

Audio Comments

LT

(50xx,200E)

Audio Sample Data

OW or OB

(50xx,200C)

Audio Sample Format

US

(50xx,2002)

Audio Type

US

(50xx,2000)

Authorization Equipment
Certification Number

LO

(0100,0426)

Average Pulse Width

DS

(0018,1154)

Axial Acceptance

DS

(0054,1200)

Axial Mash

IS

(0054,1201)

Axis Labels

SH

(50xx,0040)

Axis Units

SH

(50xx,0030)

Basic Color Image Sequence

SQ

(2020,0111)

Basic Grayscale Image Sequence

SQ

(2020,0110)

Beam Description

ST

(300A,00C3)

Beam Dose

DS

(300A,0084)

Beam Dose Specification Point

DS

(300A,0082)

Beam Limiting Device Angle

DS

(300A,0120)

Beam Limiting Device Angle
Tolerance

DS

(300A,0046)

Beam Limiting Device Leaf Pairs
Sequence

SQ

(3008,00A0)

Beam Limiting Device Position
Sequence

SQ

(300A,011A)

Beam Limiting Device Position
Tolerance

DS

(300A,004A)

Beam Limiting Device Rotation
Direction

CS

(300A,0121)

Beam Limiting Device Sequence

SQ

(300A,00B6)

Beam Limiting Device Tolerance
Sequence

SQ

(300A,0048)