DICOM PS3.3 2021d - Information Object Definitions

C.36.25 RT Treatment Preparation Module (Current)
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### C.36.25 RT Treatment Preparation Module

The RT Treatment Preparation Module contains information describing the procedures to prepare the patient for a radiotherapeutic treatment. These procedures may include aligning the patient position, setting up required accessories, such as fixation and shielding devices applied to the patient, administrating medications, etc.

Table C.36.25-1. RT Treatment Preparation Module Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Include Table 10.32-1 “Entity Long Labeling Macro Attributes”. | See Section C.36.25.1.1.
RT Patient Position Scope Sequence | (300A,0784) | 1 | The RT Radiation Set, RT Radiation Instances or the Treatment Position Groups to which the treatment preparation parameters apply. Only a single Item shall be included in this Sequence.
>Include Table C.36.2.3.1-1 “RT Patient Position Scope Macro Attributes”.
RT Treatment Preparation Patient Position Sequence | (300A,078A) | 1 | The position of the patient at the start of the treatment preparation. Only a single Item shall be included in this Sequence.
>Include Table C.36.2.3.2-1 “RT Patient Position Macro Attributes”.
Patient Treatment Preparation Method Code Sequence | (300A,078D) | 1 | Method used to prepare the Patient for treatment. Only a single Item shall be included in this Sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes”. | BCID 9571 “Patient Treatment Preparation Methods”.
Patient Treatment Preparation Method Description | (300A,0792) | 3 | User-defined description of patient treatment preparation technique.
Referenced Patient Setup Photo Sequence | (300A,078C) | 3 | References to photos illustrating the patient setup. One or more Items are permitted in this Sequence.
>Include Table 10-11 “SOP Instance Reference Macro Attributes”
>Patient Setup Photo Description | (300A,0794) | 2 | User-defined description of patient setup photo.
>Referenced Patient Setup Procedure Index | (300A,0796) | 1C | The value of Patient Treatment Preparation Procedure Index (300A,0795) from Patient Treatment Preparation Procedure Sequence (300A,0790) corresponding to the Patient Treatment Preparation Procedure to which this Sequence Item refers. Required if this Patient Setup Photo is associated with a Patient Treatment Preparation Procedure.
Patient Treatment Preparation Procedure Sequence | (300A,0790) | 2 | Procedures for preparing for the treatment of the patient. Zero or more Items shall be included in this Sequence.
>Patient Treatment Preparation Procedure Index | (300A,0795) | 1 | Index of the Patient Treatment Preparation Procedure in this Sequence. The value shall start at 1 and increase monotonically by 1.
>Patient Treatment Preparation Procedure Code Sequence | (300A,0791) | 1 | Procedure performed to prepare the patient for treatment. Only a single Item shall be present in this Sequence.
>>Include Table 8.8-1 “Code Sequence Macro Attributes” | BCID 9577 “Patient Treatment Preparation Methods”.
>Patient Treatment Preparation Device Sequence | (300A,078F) | 3 | Devices used for preparing the patient for treatment. Only a single Item is permitted in this Sequence.
>>Include Table C.36.2.2.3-1 “RT Accessory Device Identification Macro Attributes” | BCID 9573 “Patient Treaqtment Preparation Devices”.
>Patient Treatment Preparation Procedure Parameter Description | (300A,078E) | 2 | User-defined description of patient treatment preparation procedure parameter(s).
>Patient Treatment Preparation Procedure Parameter Sequence | (300A,0793) | 2 | Parameters for the Patient Treatment Preparation Procedure. Zero or more Items shall be included in this Sequence.
>>Include Table 10.2.1-1 “Content Item with Modifiers Macro Attributes” | See C.36.25.1.2 for Baseline TID.

#### C.36.25.1 RT Treatment Preparation Module Attribute Description

##### C.36.25.1.1 Treatment Preparation Instruction Description

A free-text description of the treatment preparation instruction, if present, shall be encoded in attribute Entity Description (3010,0037) of the RT Entity Labeling Macro.

##### C.36.25.1.2 Patient Treatment Preparation Procedure

In Table C.36.25-2, if the Patient Treatment Preparation Procedure Code Sequence (300A,0791) has the code value specified in the left column, the Template for Patient Treatment Preparation Procedure Parameter Sequence (300A,0793) shall be the one specified in the right column.

Table C.36.25-2. RT Treatment Preparation Module Attributes

Patient Treatment Preparation Procedure Code Sequence (300A,0791) | Patient Treatment Preparation Procedure Parameter Sequence (300A,0793)
--- | ---
(72641008, SCT, "Patient Sedation") | BTID 8182 “Exogenous Substance Administration”
(130637, DCM, "Patient Fixation Setup") | BTID 15305 “Patient Setup Fixation Device Parameters”
(130638, DCM, "Patient Alignment Setup") | BTID 15306 “Patient Setup Alignment Device Parameters”
All others | No Baseline TID defined

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DICOM PS3.3 2021d - Information Object Definitions