C.36.2.4.8 RT Image Frame General Content Macro

C.36.2.4.8 RT Image Frame General Content Macro (Current)
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The RT Image Frame General Content Macro contains information about the geometric and dosimetric context of a frame reconstructed for use in or acquired during Radiotherapy treatment sessions.

Table C.36.2.4.8-1. RT Image Frame General Content Macro Attributes

Attribute Name	Tag	Type	Attribute Description
RT Image Frame General Content Sequence	(3002,0102)	1	Identifies RT-specific characteristics of the frame. Only a single Item shall be included in this Sequence.
>Frame Type	(0008,9007)	1	Type of Frame. A multi-valued Attribute analogous to Image Type (0008,0008). See Section C.36.2.4.8.1.1 and Section C.36.27.1.1.
>Referenced Treatment Position Index	(300A,060B)	1C	The value of Treatment Position Index (300A,0606) from the Treatment Position Sequence (300A,063F) within this IOD describing the position when the frame was taken. Required if the Treatment Position Sequence (300A,063F) is present and the current Frame was acquired at a position specified in an Item of this Sequence.
>Start Cumulative Meterset	(3002,0106)	2C	The value of the Cumulative Meterset when the acquisition of the current frame started. Required if the image was acquired while therapeutic radiation was applied. May be present otherwise. The units are specified at invocation of the Macro.

C.36.2.4.8.1 RT Image Frame General Content Macro Attribute Descriptions

C.36.2.4.8.1.1 Frame Type

Frame Type (0008,9007) Value 1 and Value 2 shall identify the Pixel Data Characteristics in accordance with Section C.7.6.1.1.2.

Values 3 and 4 are required to be present.

Defined Terms for Value 3:

PLANNED: Image representing planned treatment position
TREATMENT: Image acquired at the actual treatment position or reconstructed based on the information about the actual treatment position
SIMULATION: Image acquired at a treatment device to simulate a potential treatment by a conventional simulator image

Defined Terms for Value 4:

IMAGE: Image
PORTFILM: Digitized Portal Image
DOSE: Integrated dose map at the imaging device plane [Chytyk-Praznik 2013]
FLUENCE: Fluence map

Defined Terms for Value 5:

PREDICTED: Expected values of integrated dose or fluence
ACQUIRED: Image, dose or fluence as acquired by image receptor
REF_MATCHING: Image reconstructed to compare against an image acquired at treatment position

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