AT Attribute Tag

Definition

Ordered pair of 16-bit unsigned integers that is the value of a Data Element Tag.

Attributes using AT

19 DICOM attributes declare this VR.

• (0014,0202) Data Element DataElement
• (0020,5000) Original Image Identification OriginalImageIdentification
• (0020,9165) Dimension Index Pointer DimensionIndexPointer
• (0020,9167) Functional Group Pointer FunctionalGroupPointer
• (0028,0009) Frame Increment Pointer FrameIncrementPointer
• (0028,000A) Frame Dimension Pointer FrameDimensionPointer
• (0028,0066) Compression Step Pointers CompressionStepPointers
• (0028,0404) Details of Coefficients DetailsOfCoefficients
• (0028,0702) Data Block DataBlock
• (0028,0721) Zonal Map Location ZonalMapLocation
• (0072,0026) Selector Attribute SelectorAttribute
• (0072,0052) Selector Sequence Pointer SelectorSequencePointer
• (0072,0060) Selector AT Value SelectorATValue
• (0074,1052) Attribute Occurrence Pointer AttributeOccurrencePointer
• (0400,0020) Data Elements Signed DataElementsSigned
• (2200,000E) Failure Attributes FailureAttributes
• (3008,0061) Parameter Sequence Pointer ParameterSequencePointer
• (3008,0062) Override Parameter Pointer OverrideParameterPointer
• (3008,0065) Parameter Pointer ParameterPointer

Working with AT in integration code

VR-aware transformations are where most DICOM integration bugs hide — truncating a PN's 5-component structure, misaligning OB padding, or dropping leading zeros on IS. Saga IT builds production DICOM pipelines that respect VR semantics across Mirth Connect transformers, DIMSE gateways, and cloud DICOM services.