C.8.19.6.10 X-Ray Positioner Macro

Table C.8.19.6-10 specifies the attributes of the X-Ray Positioner Functional Group macro. If included into the Shared Functional Groups Sequence (5200,9229) no DYNAMIC motion was performed during acquisition. If included in the Per-frame Functional Groups Sequence (5200,9230) the indication of a DYNAMIC motion is given.

Table C.8.19.6-10 X-RAY POSITIONER MACRO ATTRIBUTES

Attribute Name Tag Type Attribute Description
Positioner Position Sequence (0018,9405) 1 A sequence that describes the geometrical position of the positioner. Only a single Item shall be included in this sequence.
>Positioner Primary Angle (0018,1510) 1C Position of the X-Ray Image Intensifier about the patient from the RAO to LAO direction where movement from RAO to vertical is positive. See C.8.7.5.1.2. Required if Positioner Type (0018,1508) equals CARM.
>Positioner Secondary Angle (0018,1511) 1C Position of the X-Ray Image Intensifier about the patient from the CAU to CRA direction where movement from CAU to vertical is positive. See C.8.7.5.1.2 Required if Positioner Type (0018,1508) equals CARM.
>Column Angulation (Patient) (0018,9447) 1C Angle of the X-Ray beam in degree relative to an orthogonal axis to the detector plane. Positive values indicate that the tilt is towards the head of the patient. Notes: 1. The detector plane is assumed to be parallel to the table plane 2. This attribute differentiates form the attribute Column Angulation (0018,1450) by using the patient based coordinate system instead of the equipment based coordinate system. Required if Positioner Type (0018,1508) equals COLUMN.