DICOM PS3.3 2016a - Information Object Definitions
C.8.20.2.3 Segmentation Type and Segmentation Fractional Type

A Segmentation Type (0062,0001) of BINARY indicates the segmented property is present with a value of 1 and absent with a value of 0.

For a Segmentation Type (0062,0001) of FRACTIONAL the segmented property is defined as a value from zero to the Maximum Fractional Value (0062,000E). A FRACTIONAL segmentation shall be further specified via Segmentation Fractional Type (0062,0010).

Enumerated Values of Segmentation Fractional Type (0062,0010):

PROBABILITY

Defines the probability, as a percentage, that the segmented property occupies the spatial area defined by the voxel.

OCCUPANCY

Defines the percentage of the voxel area occupied by the segmented property.

DICOM PS3.3 2016a - Information Object Definitions