C.8.7.4 X-Ray Table Module

Table C.8-29 contains Attributes that describe X-Ray images acquired with movement of the patient imaging table.

Table C.8-29X-RAY TABLE MODULE ATTRIBUTES

Attribute Name Tag Type Attribute Description
Table Motion (0018,1134) 2 Defined terms: STATIC DYNAMIC
Table Vertical Increment (0018,1135) 2C Incremental change in Vertical position of the table relative to first frame of Multi-frame image given in mm. Required if Table Motion is DYNAMIC.
Table Longitudinal Increment (0018,1137) 2C Incremental change in Longitudinal position of the table relative to first frame of Multi-frame image in mm. Table motion towards +90°position of the primary angle of the positioner is positive. See C.8.7.4.1.2. Required if Table Motion is DYNAMIC.
Table Lateral Increment (0018,1136) 2C Incremental change in Lateral position of the table relative to first frame of Multi-frame image given in mm. Table motion towards +90°position of the secondary angle of the positioner is positive. See C.8.7.4.1.3. Required if Table Motion is DYNAMIC.
Table Angle (0018,1138) 3 Angle of table plane in degrees relative to horizontal plane [Gravity plane]. Positive values indicate that the head of the table is upwards.

C.8.7.4.1 X-Ray Table Attribute Descriptions

C.8.7.4.1.1 Table Motion Increments

This section is replaced by section C.8.7.4.1.4

C.8.7.4.1.2 Table Longitudinal Increment

The direction of the longitudinal movement is perpendicular to the primary axis of rotation of the positioner. A positive value of Table Longitudinal Increment (0018,1137) attributes indicates a movement towards the +90° position of the positioner, see figure C.8-9a.

[pic]

Figure C.8-9aTable Longitudinal Movement

C.8.7.4.1.3 Table Lateral Increment

The direction of the lateral movement is perpendicular to the secondary axis of rotation of the positioner. A positive value of Table Lateral Increment (0018,1136) attributes indicates a movement towards the +90° position of the positioner, see figure C.8-9b.

[pic]

Figure C.8-9b Table Lateral Movement

Note: The terms “longitudinal” and “lateral” are relative to an operator standing tableside, and facing the patient. Thus lateral movement is to the left and right of the operator, and longitudinal movement is towards or away from the operator.