C.36.2.2.8 RT Beam Limiting Devices Definition Macro

C.36.2.2.8 RT Beam Limiting Devices Definition Macro (Current)
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Table C.36.2.2.8-1 specifies the Attributes of the RT Beam Limiting Devices Definition Macro, which describe the configuration of Beam Limiting Devices which cannot vary during delivery.

Table C.36.2.2.8-1. RT Beam Limiting Devices Definition Macro Attributes

Attribute Name	Tag	Type	Attribute Description
Number of RT Beam Limiting Devices	(300A,0641)	1C	Number of RT Beam Limiting Devices in the RT Beam Limiting Device Definition Sequence (300A,064D). Required if RT Radiation Physical and Geometric Content Detail Flag (300A,0638) equals FULL. May be present otherwise.
RT Beam Limiting Device Definition Sequence	(300A,064D)	1C	Beam limiting device (collimator), such as jaw or leaf (element) sets. The number of Items included in this Sequence shall equal the value of Number of RT Beam Limiting Devices (300A,0641). Required if Number of RT Beam Limiting Devices (300A,0641) is present and has a non-zero value.
>Include Table C.36.2.2.19-1 “RT Beam Limiting Device Definition Macro Attributes”.

Attribute Name

Tag

Type

Attribute Description

Number of RT Beam Limiting Devices

(300A,0641)

Number of RT Beam Limiting Devices in the RT Beam Limiting Device Definition Sequence (300A,064D).

Required if RT Radiation Physical and Geometric Content Detail Flag (300A,0638) equals FULL. May be present otherwise.

RT Beam Limiting Device Definition Sequence

(300A,064D)

Beam limiting device (collimator), such as jaw or leaf (element) sets.

The number of Items included in this Sequence shall equal the value of Number of RT Beam Limiting Devices (300A,0641).

Required if Number of RT Beam Limiting Devices (300A,0641) is present and has a non-zero value.

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