FFF.2.4.1.3.3 X-Ray Projection Pixel Calibration Macro Recommendations

This macro contains the core inputs and results of calibration.

When there is no movement of the gantry and table, the macro is typically used in shared functional group context.

The attribute Beam Angle (0018,9449) is supplementary for the purpose of calibration; it is derived from the Primary and Secondary Positioner Angles but is not intended to replace them as they provide information for other purposes.

Table FFF.2.4-5 X-RAY PROJECTION PIXEL CALIBRATION MACRO Recommendations

Attribute Name Tag Comment
Projection Pixel Calibration Sequence (0018,9401)
>Distance Object to Table Top (0018,9403) Recommended in this scenario.
>Object Pixel Spacing in Center of Beam (0018,9404) Recommended in this scenario. The value pair corresponds to the patient plane defined by the other parameters in this macro.
>Table Height (0018,1130) Recommended in this scenario.
>Beam Angle (0018,9449) Recommended in this scenario.