DICOM PS3.3 2024d - Information Object Definitions
C.8.20.2.4 Segment Number (Current)
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PS3.3 > Information Module Definitions (Normative) > Modality Specific Modules > Segmentation > Segmentation Image Module > Segment Number
C.8.20.2.4 Segment Number

Segment Number (0062,0004) shall be unique within each Instance.

If Segmentation Type (0062,0001) is BINARY or FRACTIONAL, Segment Number (0062,0004) shall start at a value of 1, and increase monotonically by 1.

Note

  1. When converting from LABELMAP Segmentation Instances to BINARY Segmentation Instances, care should be taken to reassign the Segment Number (0062,0004) values if necessary, such that the requirements in this section are complied with.

  2. Requirements on the ascending order of the Segment Number (0062,0004) values do not imply an ordering of the Sequence Items of any enclosing Sequence.

  3. For a Segmentation Type (0062,0001) of LABELMAP, if a value is specified in Pixel Padding Value (0028,0120), that indicates that the corresponding Segment Number is treated as background; see Section A.51.4 and Section C.7.5.1.1.2. Otherwise, no particular value of Segment Number is deemed to be treated specially as background.

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C.8.20.2.3 Segmentation Type, Segmentation Fractional Type and Segments Overlap  Home  C.8.20.3 Segmentation Functional Group Macros
DICOM PS3.3 2024d - Information Object Definitions