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Page 1596​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

 

Attribute Description​

>Radiobiological Dose Effect​

(3010,0001)​

1C​

Describes the radiobiological effects if any that are taken into​

Sequence​

 

 

account to compute dose.​

 

 

 

Required if Dosimetric Objective Parameter Sequence​

 

 

 

(3010,0070) contains a parameter which represents a dose.​

 

 

 

Only a single Item shall be included in this Sequence.​

 

 

 

See Section C.36.2.1.4.1.2.​

>>IncludeTableC.36.2.1.5-1“RadiobiologicalDoseEffectDescription​

 

Macro Attributes”​

 

 

 

 

AbsoluteDosimetricObjective​

(3010,0073)​

1​

Whether the objective must be met by the resulting​

Flag​

 

 

Radiotherapy treatment plan.​

 

 

 

Enumerated Values:​

 

 

 

YES​Objective must be met.​

 

 

 

NO​ Objective should be met but may be compromised.​

 

 

 

Detecting whether or not a Radiotherapy treatment plan has​

 

 

 

met this Dosimetric Objective and how this situation is handled​

 

 

 

is out of scope of the Standard.​

DosimetricObjectivePurpose​

(3010,0075)​

2​

The purpose for which the objective is to be used.​

 

 

 

Enumerated Values:​

 

 

 

OPTIMIZATION​Usedasaninputtotheoptimizationprocess.​

 

 

 

EVALUATION​

Used as a tool for evaluation.​

 

 

 

BOTH​

Used as both an input to the optimization​

 

 

 

 

process and for evaluation.​

C.36.2.1.4.1 Dosimetric Objective Macro Attribute Descriptions​

C.36.2.1.4.1.1 Dosimetric Objective UID​

Dosimetric Objectives (see Section C.36.6.1.6) are identified by UIDs. These UIDs serve as a key to allow references of Dosimetric​ Objectives within or across various SOP Instances.​

C.36.2.1.4.1.2 Dosimetric Objective Parameter Sequence​

ADosimetricObjectiveisdescribedbyatypeexpressedintheDosimetricObjectiveTypeCodeSequence(3010,006D),andaSequence​ of zero or more parameters to quantify the objective within the Dosimetric Objective Parameter Sequence (3010,0070).​

Table C.36.2.1.4-2 specifies the parameters that shall be sent.​

Table C.36.2.1.4-2. Dosimetric Objective Parameters​

Dosimetric Objective Type​

Parameter​

Parameter​

Parameter​

CodeSequence(3010,006D)​

Concept Name Code(s)​

Value Type(s)​

Measurement Units Code(s)​

 

 

Code included in:​

none​

 

none​

none​

CID 9532 “No-Parameter​

 

 

 

 

Dosimetric Objectives”​

 

 

 

 

Code included in:​

EV (130019, DCM, "Specified Radiation​ NUMERIC​

Units = EV (Gy,UCUM,"Gray")​

CID 9529 “Single Dose​

Dose")​

 

 

 

 

 

 

Dosimetric Objectives”​

 

 

 

 

- Standard -​

 

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 1597​

Dosimetric Objective Type​

 

Parameter​

Parameter​

Parameter​

CodeSequence(3010,006D)​

Concept Name Code(s)​

Value Type(s)​

Measurement Units Code(s)​

 

 

Code included in:​

EV (130021, DCM, "Specified Volume​

NUMERIC​

Units = EV (%,UCUM,"Percent")​

CID 9530 “Percentage and​

Percentage")​

 

 

 

EV (130019, DCM, "Specified Radiation​ NUMERIC​

Units = EV (Gy,UCUM,"Gray")​

Dose Dosimetric Objectives”​

 

 

 

 

 

Dose")​

 

 

 

Code included in:​

EV (130020, DCM, "Specified Volume​

NUMERIC​

Units = EV (cm3,UCUM,"Cubic​

 

Size")​

 

 

 

Centimeter")​

CID 9531 “Volume and Dose​EV (130019, DCM, "Specified Radiation​ NUMERIC​

Units = EV (Gy,UCUM,"Gray")​

Dosimetric Objectives”​

Dose")​

 

 

 

 

 

 

 

(130010, DCM, "Minimum​

EV (130074, DCM, "Specified Conformity​NUMERIC​

Units = EV (1,UCUM,"no units")​

Conformity Index")​

Index")​

 

 

 

 

EV (130019, DCM, "Specified Radiation​ NUMERIC​

Units = EV (Gy,UCUM,"Gray")​

 

Dose")​

 

 

 

(130011, DCM, "Minimum​

EV (130075, DCM, "Specified Healthy​

NUMERIC​

Units = EV (1,UCUM,"no units")​

Healthy Tissue Conformity​

Tissue Conformity Index")​

 

 

Index")​

EV (130019, DCM, "Specified Radiation​ NUMERIC​

Units = EV (Gy,UCUM,"Gray")​

 

 

Dose")​

 

 

 

(130012, DCM, "Minimum​

EV(130076,DCM,"SpecifiedConformation​NUMERIC​

Units = EV (1,UCUM,"no units")​

Conformation Number")​

Number")​

 

 

 

 

EV (130019, DCM, "Specified Radiation​ NUMERIC​

Units = EV (Gy,UCUM,"Gray")​

 

Dose")​

 

 

 

(130013, DCM, "Maximum​

EV(130077,DCM,"SpecifiedHomogeneity​NUMERIC​

Units = EV (1,UCUM,"no units")​

Homogeneity Index")​

Index")​

 

 

 

 

EV (130019, DCM, "Specified Radiation​ NUMERIC​

Units = EV (Gy,UCUM,"Gray")​

 

Dose")​

 

 

 

C.36.2.1.4.1.2.1 Dosimetric Objective Parameter Sequence Examples​

Todescribetheobjectivethatamaximumof30%ofthevolumecanreceive50Gyormore(V50<=30%),onewouldusetheDosimetric​ Objective Type Code Sequence (3010,006D) with code value (130015, DCM, "Maximum Percent Volume at Dose"), with the para-​ meters specified in the Dosimetric Objective Parameter Sequence (3010,0070) as follows:​

Dosimetric Objective Sequence (3010,006C):​

•​Dosimetric Objective Type Code Sequence (3010,006D):​

•​(130015, DCM, "Maximum Percent Volume at Dose")​

•​Dosimetric Objective Parameter Sequence (3010,0070)​

•​Item 1:​

•​Value Type (0040,A040) = NUMERIC​

•​Concept Name Code Sequence (0040,A043)​

•​(130021, DCM, "Specified Volume Percentage")​

•​Numeric Value (0040,A30A) = 30​

•​Measurement Units Code Sequence (0040,08EA)​

•​(%, UCUM, "Percent")​

•​Item 2:​

- Standard -​

Page 1598​

DICOM PS3.3 2020a - Information Object Definitions​

•​Value Type (0040,A040) = NUMERIC​

•​Concept Name Code Sequence (0040,A043)​

•​(130019, DCM, "Specified Radiation Dose")​

•​Numeric Value (0040,A30A) = 50​

•​Measurement Units Code Sequence (0040,08EA)​

•​(Gy, UCUM, "Gray")​

C.36.2.1.4.1.3 Radiobiological Dose Effect Sequence​

The Radiobiological Dose Effect Sequence (3010,0001) specifies whether a code value of (Gy,UCUM,"Gray") in the Measurement​ Units Code Sequence (0040,08EA) in the Dosimetric Objective Parameter Sequence (3010,0070) denotes physical or effective dose.​

C.36.2.1.5 Radiobiological Dose Effect Description Macro​

The Radiobiological Dose Effect Description Macro describes whether dose values are provided as physical dose or effective dose.​ An effective dose value incorporates adjustments to dose by taking into account the radiobiological effects.​

Table C.36.2.1.5-1. Radiobiological Dose Effect Description Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Radiobiological Dose Effect Flag​

(3010,0002)​

1​

Whether radiobiological effects are taken into account for​

 

 

 

a given dose value.​

 

 

 

Enumerated Values:​

 

 

 

YES​Effective dose after correction for biological effect.​

 

 

 

NO​ Physical dose.​

EffectiveDoseCalculationMethod​

(3010,0003)​

2C​

The category of the method used to calculate the effective​

Category Code Sequence​

 

 

dose.​

 

 

 

Required if Radiobiological Dose Effect Flag (3010,0002)​

 

 

 

equals YES.​

 

 

 

Zero or more Items shall be included in this Sequence.​

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

 

DCID 9537 “Effective Dose Calculation Method​

 

 

 

Categories”.​

>Effective Dose Calculation​

(3010,0004)​

3​

Defines the effective dose calculation method.​

Method Code Sequence​

 

 

One or more Items are permitted in this Sequence.​

 

 

 

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

 

See Section C.36.2.1.5.1.1.​

EffectiveDoseCalculationMethod​

(3010,0005)​

2C​

The description of the method used to calculate the​

Description​

 

 

effective dose.​

Required if Radiobiological Dose Effect Flag (3010,0002)​ is YES.​

C.36.2.1.5.1 Radiobiological Dose Effect Description Macro Attribute Descriptions​

C.36.2.1.5.1.1 Effective Dose Method Modifier Code Sequence​

The calculation of the radiobiological effect may be further described by a specific method.​

In Table C.36.2.1.5-2, if the Effective Dose Calculation Method Category Code Sequence (3010,0003) has the code value specified​ in the left column, the Context Group for Effective Dose Calculation Method Code Sequence (3010,0004) shall be the one specified​ in the right column.​

- Standard -​

DICOM PS3.3 2020a - Information Object Definitions​ Page 1599​

Table C.36.2.1.5-2. Effective Dose Calculation Method Context Groups​

EffectiveDoseCalculationMethodCategoryCodeSequence​Context Group for Effective Dose Calculation Method Code​

(3010,0003)​

 

Sequence (3010,0004)​

(130126, DCM, "Radiation transport-based methods")​

DCID 9538

“Radiation Transport-based Effective Dose Method​

 

Modifiers”​

(130127, DCM, "Fractionation-based or temporally-based​

DCID 9539

“Fractionation-based Effective Dose Method Modifiers”​

methods")​

 

 

C.36.2.2 RT Second Generation Device Macros​

C.36.2.2.1 Treatment Device Identification Macro​

The Treatment Device Identification Macro identifies a device used to deliver radiation to the patient during a radiotherapy treatment​ session.​

Table C.36.2.2.1-1. Treatment Device Identification Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Treatment Device Identification​

(300A,063A)​

1​

Identifies treatment device.​

Sequence​

 

 

Only a single Item shall be included in this Sequence.​

 

 

 

>Include Table 10.35-1 “Device Model Macro Attributes”.​

 

Identifies the device model for the Treatment Device.​

>Manufacturer's Device Class​

(0018,100B)​

2​

Manufacturer's Unique Identifier (UID) for the class of the​

UID​

 

 

device.​

 

 

 

A class is a manufacturer-specific grouping concept with​

 

 

 

noDICOM-definedscopeorcriteria.Aclassisindependent​

 

 

 

from a marketing-defined make, model or version.​

 

 

 

Aclassallowsdefinitionofagroupofdeviceswithasimilar​

 

 

 

set of capabilities.​

>Include Table 10.36-1 “Device Identification Macro Attributes”.​

DCID 9551 “Treatment Delivery Device Types”.​

>Institution Name​

(0008,0080)​

3​

Institution where the equipment is located.​

>Institution Address​

(0008,0081)​

3​

Mailing address of the institution where the equipment is​

 

 

 

located.​

>InstitutionalDepartmentName​

(0008,1040)​

3​

Department in the institution where the equipment is​

 

 

 

located.​

C.36.2.2.2 RT Patient Support Devices Macro​

The RT Patient Support Devices Macro identifies a patient support device (table, table top, chair or similar) which shall be used for​ treatment.​

Table C.36.2.2.2-1. RT Patient Support Devices Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Number of Patient Support​

(300A,0687)​

1​

NumberofPatientSupportDevicesdefinedinthePatient​

Devices​

 

 

Support Devices Sequence (300A,0686).​

- Standard -​

Page 1600​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

Patient Support Devices​

(300A,0686)​

1C​

Patient support device definitions.​

Sequence​

 

 

Required if the Number of Patient Support Devices​

 

 

 

 

 

 

(300A,0687) is non-zero.​

 

 

 

ThenumberofItemsincludedinthisSequenceshallequal​

 

 

 

the value ofNumber of Patient Support Devices​

 

 

 

(300A,0687).​

>Device Index​

(3010,0039)​

1​

Index of the Device in this Sequence.​

 

 

 

The value shall start at 1 and increase monotonically by​

 

 

 

1.​

>Include Table 10.35-1 “Device Model Macro Attributes”.​

 

 

>Include Table 10.36-1 “Device Identification Macro Attributes”.​

DCID 9505 “Fixation or Positioning Devices”.​

>Conceptual Volume​

(3010,0025)​

2​

References a conceptual volume that describes the​

Sequence​

 

 

geometry and properties of the patient support device.​

Zero or one Item shall be included in this Sequence.​

>>Include Table 10.34-1 “Conceptual Volume Segmentation Reference And Combination Macro Attributes”.​

C.36.2.2.3 RT Accessory Device Identification Macro​

The RT Accessory Device Identification Macro identifies an RT accessory device and its location.​

Table C.36.2.2.3-1. RT Accessory Device Identification Macro Attributes​

Attribute Name​ Tag​ Type​ Attribute Description​

Include Table 10.35-1 “Device Model Macro Attributes”.​

Include Table 10.36-1 “Device Identification Macro Attributes”.​CID is defined by invocation.​

RT Accessory Device Slot​

(300A,0615)​

2C​

Identifierforlocation(slot)ofradiationmodifieraccessorywherethe​

ID​

 

 

current accessory is inserted.​

 

 

 

Required if accessory is located in a slot and Referenced RT​

 

 

 

Accessory Holder Device Index (300A,060E) is not present.​

RTAccessorySlotDistance​

(300A,0613)​

2C​

Distance in mm from the reference location as specified by RT​

 

 

 

Device Distance Reference Location Code Sequence (300A,0659)​

 

 

 

to the Accessory Slot.​

 

 

 

Required if RT Accessory Device Slot ID (300A,0615) is present​

 

 

 

and has a value.​

Referenced RT Accessory​

(300A,060E)​

2C​

The value of Device Index (3010,0039) of the Accessory Holder​

Holder Device Index​

 

 

deviceintheRTAccessoryHolderDefinitionSequence(300A,0614).​

 

 

 

Required if accessory is mounted on a holder device and RT​

 

 

 

Accessory Device Slot ID (300A,0615) is not present.​

RT Accessory Holder Slot​

(300A,0611)​

2C​

Identifier for location (slot) of radiation modifier in the Accessory​

ID​

 

 

Holding device where the current accessory is inserted.​

Required if Referenced RT Accessory Holder Device Index​ (300A,060E) is present and has a value and the referenced​ Accessory Holder Device contains an RT Accessory Holder Slot​ Sequence (300A,0610).​

- Standard -​

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