Value Representation

UC Unlimited Characters

Category
string
Max Length
2^32-2 bytes
Fixed Length
No
Source
PS3.5 §6.2

Definition

A character string that may be of unlimited length. The string may be padded with trailing spaces; leading spaces are significant.

Attributes using UC

14 DICOM attributes declare this VR.

Working with UC 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.