The 2D structures are used for images.
The 2D classes available in the basic package are:
•Study
•Series
•DICOM Tree
•Convolution Filter
•Mixer
•MPR Ortho
•MPR Oblique
•Multiplex
•ROI
•Unsorted
You also have access to a number of additional classes through the additional modules:
•Border
•Clone
•Gradient Amplification
•Path
•RR2D
•RR3D
•Suffix