DICOM PS3.3 2020d - Information Object Definitions
C.36.2.2.11 Wedge Positions Macro

This Macro defines the positions of Wedges used in a specific Control Point or set of Control Points.

Table C.36.2.2.11-1. Wedge Positions Macro Attributes

Attribute Name

Tag

Type

Attribute Description

Number of Wedge Positions

(300A,0655)

1C

Number of Wedge Positions defined in the Wedge Position Sequence (300A,0116).

Required if Number of Wedges (300A,00D0) is present and has a non-zero value.

Wedge Position Sequence

(300A,0116)

1C

Position for each Wedge for the current Control Point.

Required if Number of Wedge Positions (300A,0655) is present and has a non-zero value and the conditions in Section C.36.2.2.5.1.1 are satisfied.

The number of Items included in this Sequence shall equal the value of Number of Wedge Positions (300A,0655).

>Referenced Device Index

(300A,0607)

1

The value of Device Index (3010,0039) in Wedge Definition Sequence (300A,0651) for the Wedge being used.

>Wedge Position

(300A,0118)

1

Position of Wedge at current Control Point.

Enumerated Values:

IN

The compensator surface shape is directed towards the patient.

OUT

The wedge is in fully retracted position.

PARTIAL

The wedge is inserted only part of the way.

>Radiation Beam Wedge Thin Edge Distance

(300A,0653)

1C

Closest distance in mm from the central axis of the beam along the wedge angle direction to the thin edge as projected on the Beam Modifier Definition Plane defined by the RT Beam Modifier Definition Distance (300A,0688).

The value is negative if the thin edge is located on the positive y-axis, and is positive otherwise.

Required if Wedge Position (300A,0118) is PARTIAL.

See Section C.36.2.2.11.1.1.


C.36.2.2.11.1 Wedge Positions Macro Attribute Descriptions
C.36.2.2.11.1.1 Radiation Beam Wedge Thin Edge Distance

Radiation Beam Wedge Thin Edge Position

Figure C.36.2.2.11.1-1. Radiation Beam Wedge Thin Edge Position


DICOM PS3.3 2020d - Information Object Definitions