Z X-Ray Isocenter Reference Transformations (Informative)
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# Z X-Ray Isocenter Reference Transformations (Informative)

## Z.1 Introduction

The Isocenter Reference System Attributes describe the 3D geometry of the X-Ray equipment composed by the X-Ray positioner and the X-Ray table.

These attributes define three coordinate systems in the 3D space:

- Isocenter coordinate system

- Positioner coordinate system

- Table coordinate system

The Isocenter Reference System attributes describe the relationship between the 3D coordinates of a point in the table coordinate system and the 3D coordinates of such point in the positioner coordinate system (both systems moving in the equipment), by using the Isocenter coordinate system that is fixed in the equipment.

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Y VOI LUT Functions (Informative) | Home | Z.2 Positioner Coordinate System Transformations