DICOM PS3.3 2021b - Information Object Definitions
C.36.2.2.4 RT Treatment Position Macro

The RT Treatment Position Macro establishes a connection between the patients geometry and the treatment delivery equipment to define the treatment position. When used in an RT Radiation object, this treatment position is the prescribed position. When used in an RT Radiation Record object, this treatment position is the record of the actual position.

Table C.36.2.2.4-1. RT Treatment Position Macro Attributes

Attribute Name

Tag

Type

Attribute Description

Patient Orientation Code Sequence

(0054,0410)

1

Sequence that describes the orientation of the patient with respect to gravity. See Section C.8.4.6.1.1 for further explanation.

Only a single item shall be included in this Sequence.

>Include Table 8.8-1 “Code Sequence Macro Attributes”.

DCID 19 “Patient Orientation”.

>Patient Orientation Modifier Code Sequence

(0054,0412)

1C

Patient Orientation Modifier.

Required if needed to fully specify the orientation of the patient with respect to gravity.

Only a single Item shall be included in this Sequence.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”.

DCID 20 “Patient Orientation Modifier”.

Patient Equipment Relationship Code Sequence

(3010,0030)

1

Sequence describing the orientation of the patient with respect to equipment.

Only a single Item shall be included in this Sequence.

>Include Table 8.8-1 “Code Sequence Macro Attributes”.

DCID 21 “Patient Equipment Relationship”.

Patient Setup UID

(300A,0650)

1C

Identifies a conceptual patient setup that may or may not be realized by one or more RT Patient Setup Instances.

Required if Referenced RT Patient Setup Sequence (300A,0632) is present. May be present otherwise.

Referenced RT Patient Setup Sequence

(300A,0632)

1C

References the RT Patient Setup SOP Instance that was used as the setup instruction for the patient prior to delivery of the radiation.

Required if there was a Patient Setup SOP Instance defined providing the instructions to the delivery system.

Only a single Item shall be included in this Sequence.

>Include Table 10-11 “SOP Instance Reference Macro Attributes”.

Treatment Position Sequence

(300A,063F)

1C

Patient positions during treatment, being prescribed or recorded.

Required if the SOP Class of the SOP Instance including this Module is not RT Radiation Salvage Record Storage (“1.2.840.10008.5.1.4.1.1.481.17”). May be present otherwise.

One or more Items shall be included in this Sequence.

>Treatment Position Index

(300A,0606)

1

Index of this Item in this Sequence.

The value shall start at 1 and increase monotonically by 1.

>Include Table 10.39-1 “Patient to Equipment Relationship Macro Attributes”.

DCID 9553 “Treatment Points”.


DICOM PS3.3 2021b - Information Object Definitions