UL Unsigned Long

Definition

Unsigned binary integer 32 bits long. Represents an integer n in the range 0 ≤ n < 2^32.

Attributes using UL

84 DICOM attributes declare this VR. Showing the first 24.

• (0002,0000) File Meta Information Group Length FileMetaInformationGroupLength
• (0002,0037) RTV Flow RTP Sampling Rate RTVFlowRTPSamplingRate
• (0004,1200) Offset of the First Directory Record of the Root Directory Entity OffsetOfTheFirstDirectoryRecordOfTheRootDirectoryEntity
• (0004,1202) Offset of the Last Directory Record of the Root Directory Entity OffsetOfTheLastDirectoryRecordOfTheRootDirectoryEntity
• (0004,1400) Offset of the Next Directory Record OffsetOfTheNextDirectoryRecord
• (0004,1420) Offset of Referenced Lower-Level Directory Entity OffsetOfReferencedLowerLevelDirectoryEntity
• (0004,1504) MRDR Directory Record Offset MRDRDirectoryRecordOffset
• (0004,1600) Number of References NumberOfReferences
• (0008,0001) Length to End LengthToEnd
• (0008,0309) Private Data Element Value Multiplicity PrivateDataElementValueMultiplicity
• (0008,030B) Private Data Element Number of Items PrivateDataElementNumberOfItems
• (0008,0427) Number of Study Records in Instance NumberOfStudyRecordsInInstance
• (0008,1161) Simple Frame List SimpleFrameList
• (0008,1162) Calculated Frame List CalculatedFrameList
• (0018,106E) Trigger Sample Position TriggerSamplePosition
• (0018,1637) Number of Polygonal Vertices NumberOfPolygonalVertices
• (0018,6016) Region Flags RegionFlags
• (0018,6018) Region Location Min X0 RegionLocationMinX0
• (0018,601A) Region Location Min Y0 RegionLocationMinY0
• (0018,601C) Region Location Max X1 RegionLocationMaxX1
• (0018,601E) Region Location Max Y1 RegionLocationMaxY1
• (0018,6030) Transducer Frequency TransducerFrequency
• (0018,6032) Pulse Repetition Frequency PulseRepetitionFrequency
• (0018,6038) Doppler Sample Volume X Position (Retired) DopplerSampleVolumeXPositionRetired

Working with UL 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.