ITK orientation codes
The orientation code maps the voxel coordinate system I (column) J (row) K (slice) to right-handed coordinate system X Y Z. Minor rank notation is used, characters R (right), L (left), A (anterior), P (posterior), I (inferior), S (superior) identify from direction.
E.g. RAI, the ITK default orientation, means
- X: patient Right to left
- Y: patient Anterior to posterior
- Z: patient Inferior to superior
Spatial position, orientation and geometry of DICOM series (CT, MR, PET and other IODs) are examined. If the image is recognized as orientated uniform volume, it receives green ITK orientation code in information widget.