DICOM PS3.4 2019c - Service Class Specifications

N.2.3.4 Post-Spatial Transformation Annotation

The Post-Spatial Transformation Annotation transformation includes the application of free unformatted text or vector graphics as described in the Graphic Annotation Module that are defined in the displayed area space (as opposed to the image pixel space).

This implies that the displayed area space is defined as being the image after all Spatial Transformations have been applied.

These annotations are rendered in the displayed space, though they may be anchored to points in either the displayed area or image pixel space.

DICOM PS3.4 2019c - Service Class Specifications