DICOM PS3.3 2019a - Information Object Definitions

C.8.31.2 Breast X-Ray Positioner Macro

Table C.8.31.2-1 specifies the Attributes of the Breast X-Ray Positioner Functional Group Macro.

Table C.8.31.2-1. Breast 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

Signed position in degrees of the X-Ray beam vector in the coronal anatomical plane as if the patient were standing facing the equipment where vertical is zero.

Required if X-Ray source can be moved in the coronal anatomical plane. May be present otherwise.

>Positioner Primary Angle Direction

(0018,9559)

1C

The interpretation of the sign of the Positioner Primary Angle (0018,1510).

Enumerated Values:

CW

Clockwise. Positioner Primary Angle movement is positive when movement is from vertical to the patient's right (with patient standing, facing the equipment).

CC

Counter-clockwise. Positioner Primary Angle is positive when movement is from vertical to the patient's left (with patient standing, facing the equipment).

See Figure C.8.31.2-1.

Required if Positioner Primary Angle (0018,1510) is present.

>Positioner Secondary Angle

(0018,1511)

1C

Position in degrees of the X-Ray beam vector in the sagittal anatomical plane as if the patient were standing where movement of the X-Ray source from anterior to posterior is positive, and vertical is zero.

Required if the X-Ray source can be moved in the sagittal anatomical plane. May be present otherwise.


C.8.31.2.1 Breast X-Ray Positioner Attribute Descriptions

Figure C.8.31.2-1 illustrates the Defined Terms for Positioner Primary Angle Direction (0018,9559), indicating which C-arm movement direction defines a positive value for Positioner Primary Angle (0018,1510).

Illustration of Positioner Primary Angle Direction

Figure C.8.31.2-1. Illustration of Positioner Primary Angle Direction


DICOM PS3.3 2019a - Information Object Definitions