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DICOM PS3.3 2020a - Information Object Definitions​

Page 851​

Attribute Name​

Tag​

Type​

Description​

 

>Table Top Lateral Adjusted​

(0074,1028)​

2​

Adjusted Table Top Lateral position in the IEC TABLE TOP coordinate​

Position​

 

 

system in mm for patient setup. See Section C.8.8.29.2.​

 

>Patient Support Adjusted​

(0074,102A)​

2​

Adjusted Patient Support angle for patient setup, i.e., orientation of the​

Angle​

 

 

IEC PATIENT SUPPORT coordinate system with respect to the IEC​

 

 

 

FIXED REFERENCE coordinate system in degrees. See​

 

 

 

 

Section C.8.8.29.2.​

 

>Table Top Eccentric​

(0074,102B)​

2​

Adjusted Table Top (non-isocentric) angle for patient setup, i.e.,​

Adjusted Angle​

 

 

orientation of the IEC TABLE TOP ECCENTRIC coordinate system​

 

 

 

with respect to the IEC PATIENT SUPPORT system in degrees. See​

 

 

 

Section C.8.8.29.2.​

 

>Table Top Pitch Adjusted​

(0074,102C)​

2​

Adjusted Table Top Pitch Angle for patient setup, i.e., the rotation of​

Angle​

 

 

the IEC TABLE TOP coordinate system about the X-axis of the IEC​

 

 

 

TABLE TOP coordinate system in degrees. See Section C.8.8.29.2.​

>Table Top Roll Adjusted​

(0074,102D)​

2​

Adjusted Table Top Roll Angle for patient setup, i.e., the rotation of the​

Angle​

 

 

IECTABLETOPcoordinatesystemabouttheY-axisoftheIECTABLE​

 

 

 

TOP coordinate system in degrees. See Section C.8.8.29.2.​

>Table Top Vertical Setup​

(300A,01D2)​

2​

VerticalDisplacementintheIECTABLETOPcoordinatesysteminmm​

Displacement​

 

 

relative to initial Setup Position, i.e., vertical offset between patient​

 

 

 

positioning performed using setup and treatment position.​

 

>Table Top Longitudinal​

(300A,01D4)​

2​

Longitudinal Displacement in the IEC TABLE TOP coordinate system​

Setup Displacement​

 

 

in mm relative to initial Setup Position, i.e., longitudinal offset between​

 

 

 

patient positioning performed using setup and treatment position.​

>Table Top Lateral Setup​

(300A,01D6)​

2​

Lateral Displacement in the IEC TABLE TOP coordinate system in mm​

Displacement​

 

 

relative to initial Setup Position, i.e., lateral offset between patient​

 

 

 

positioning performed using setup and treatment position.​

 

>IncludeTable10-28“DeviceMotionControlMacroAttributes​

 

Description”​

 

 

 

 

>Delivery Verification Image​

(0074,1030)​

2C​

Beam verification images to be acquired for current beam.​

 

Sequence​

 

 

Required if Beam Task Type (0074,1022) is VERIFY or​

 

 

 

 

 

 

 

 

VERIFY_AND_TREAT.​

 

 

 

 

Zero or one Item shall be included in this Sequence if Beam Task Type​

 

 

 

(0074,1022) is VERIFY. Zero or more Items shall be included in this​

 

 

 

Sequence if Beam Task Type (0074,1022) is VERIFY_AND_TREAT.​

>>Verification Image Timing​

(0074,1032)​

1​

Indicatesthetemporalrelationshipoftheverificationimagewithrespect​

 

 

 

to the current treatment beam delivery. Value shall be DURING_BEAM​

 

 

 

for Beams with a Beam Task Type (0074,1022) of VERIFY.​

 

 

 

Enumerated Values:​

 

 

 

 

BEFORE_BEAM​

 

 

 

 

DURING_BEAM​

 

 

 

 

AFTER_BEAM​

 

>>StartCumulativeMeterset​

(300C,0008)​

1C​

Cumulative Meterset Weight within current Beam at which image​

Weight​

 

 

acquisition will start. Required if Verification Image Timing (0074,1032)​

 

 

 

is DURING_BEAM.​

 

- Standard -​

Page 852​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Description​

>>Meterset Exposure​

(3002,0032)​

2C​

Treatment machine Meterset duration over which image is to be​

 

 

 

acquired, specified in Monitor units (MU) or minutes as defined by​

 

 

 

Primary Dosimeter Unit (300A,00B3) specified in the Referenced RT​

 

 

 

Plan Sequence (300C,0002).​

 

 

 

Required if Verification Image Timing (0074,1032) is BEFORE_BEAM​

 

 

 

or AFTER_BEAM.​

 

 

 

See Section C.8.8.29.3.​

>>End Cumulative Meterset​

(300C,0009)​

2C​

Cumulative Meterset Weight within current Beam at which image​

Weight​

 

 

acquisition will end.​

 

 

 

Required if Verification Image Timing (0074,1032) is DURING_BEAM.​

>>Double Exposure Flag​

(0074,1034)​

1​

Indicates whether the current verification image is a single or double​

 

 

 

exposure.​

 

 

 

Enumerated Values:​

 

 

 

SINGLE​single exposure​

 

 

 

DOUBLE​double exposure​

>>DoubleExposureOrdering​

(0074,1036)​

1C​

Indicates the ordering of the open (double exposure) field with respect​

 

 

 

to the primary (collimated) field in a double exposure.​

 

 

 

Defined Terms:​

 

 

 

OPEN_FIRST​ Open field first​

 

 

 

OPEN_SECOND​Open field second​

 

 

 

Required if Double Exposure Flag (0074,1034) is DOUBLE.​

>>DoubleExposureMeterset​

(0074,1338)​

2C​

Ifthisfieldispresent,anadditionalexposurewiththeindicatedMeterset​

 

 

 

is requested.​

 

 

 

Required if Double Exposure Flag (0074,1034) is DOUBLE.​

>>Double Exposure Field​

(0074,133A)​

2C​

Offsets of field-defining edges in mm for the double exposure in the​

Delta​

 

 

IEC BEAM LIMITING DEVICE coordinate system in the IEC order X1,​

 

 

 

X2, Y1, Y2. Negative values for X1 and Y1 indicate an enlarged field,​

 

 

 

negative values for X2 and Y2 indicate a reduced field.​

 

 

 

Required if Double Exposure Flag (0074,1034) is DOUBLE.​

 

 

 

See Section C.8.8.29.4.​

>>X-Ray Image Receptor​

(3002,000D)​

2​

Position in (x,y,z) coordinates in mm of origin of the IEC X-RAY IMAGE​

Translation​

 

 

RECEPTOR System in the IEC GANTRY coordinate system.​

>>Related Reference RT​

(0074,1040)​

3​

Uniquely identifies Reference Images to which planned verification​

Image Sequence​

 

 

image is related. All Items in this Sequence shall be RT Image SOP​

 

 

 

Instances.​

 

 

 

One or more Items are permitted in this Sequence.​

>>>Include Table 10-11 “SOP Instance Reference Macro​

 

Attributes”​

 

 

 

Omitted Beam Task​

(300C,0111)​

3​

Beams not to be delivered and/or verified.​

Sequence​

 

 

One or more Items are permitted in this Sequence.​

 

 

 

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 853​

Attribute Name​

Tag​

Type​

Description​

 

>Referenced Beam Number​

(300C,0006)​

1​

Uniquely identifies the Beam that is specified by Beam Number​

 

 

 

(300A,00C0)withinBeamSequence(300A,00B0)inRTBeamsModule​

 

 

 

of referenced RT Plan or within Ion Beam Sequence (300A,03A2) in​

 

 

 

RT Ion Beams Module of the referenced RT Ion Plan.​

 

>Reason for Omission​

(300C,0112)​

1​

Reason why the referenced beam is not to be delivered and/or verified:​

 

 

 

Defined Terms:​

 

 

 

 

ALREADY_TREATED​Thebeamhasbeenalreadytreatedinanearlier​

 

 

 

treatment session​

 

>Reason for Omission​

(300C,0113)​

3​

Description of reason for omission.​

 

Description​

 

 

 

 

C.8.8.29.1 Current Fraction Number​

For beams with a Treatment Delivery Type (300A,00CE) of CONTINUATION, the Current Fraction Number (3008,0022) is that of the​ original fraction to be completed by the current beam.​

C.8.8.29.2 Adjusted Table Positions and Angles​

AdjustedTablepositionsandanglesserveasafacilitytocommunicateashift(oftensystematic)thathasbeendetectedfromprevious​ treatments. They define a new initial patient position, which is near and aligned to the actual patient position during beam delivery.​ These Attributes do not affect the original relationship between the beams and the planning image patient anatomy.​

C.8.8.29.3 Meterset Exposure​

Meterset Exposure (3002,0032) can be interpreted as the 'maximum' Meterset duration in cases where an automatic exposure is​ taken.​

C.8.8.29.4 Double Exposure Field Delta​

The following diagram illustrates the case where the second X aperture in a double exposure is larger than the initial aperture. In this​ case ΔX1 is negative and ΔX2 is positive. If a field edge is defined by a multileaf collimator, then the field delta is to be applied to the​ most open leaf, such that all leaves can be moved to that position.​

-40

-20

0

 

30

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Delta X

= -20

Delta X

= 30

1

 

2

 

Figure C.8.8.29-1. Double Exposure Field Delta​

C.8.8.29.5 Beam Order Index​

If the Beam Order Index (0074,1324) is present for any Item in the Beam Task Sequence (0074,1020), it shall be provided for all​ Items in that Sequence.​

- Standard -​

Page 854​

DICOM PS3.3 2020a - Information Object Definitions​

C.8.8.29.6 Autosequence Flag​

Autosequence Flag (0074,1025) shall not be present when the Beam Order Index (0074,1324) is not present. The first treatment​ Beam(BeamTask Type (0074,1022) is notVERIFY)asspecifiedbytheBeamOrderIndex(0074,1324),shallhaveanAutosequence​ Flag (0074,1025) value of NO.​

C.8.8.30 RT Brachy Application Setup Delivery Instruction Module​

TheRTBrachyApplicationSetupDeliveryInstructionModulecontainsadditionalinformationrequiredbyaTreatmentDeliverySystem​ (TDS) when specifying delivery of a brachytherapy treatment.​

This Module references the RT Plan to be delivered and specifies the treatment tasks to be performed for the Application Setups of​ the RT Plan.​

Delivery Instruction

1

 

1

references

 

 

contains

 

 

 

 

1

 

 

 

 

 

 

1-n

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Plan

 

 

Task

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

1

 

 

contains

 

 

references

 

 

 

 

1-n

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Application Setup

Figure C.8.8.30-1. Relationship of brachytherapy treatment plan and delivery instruction​

The RT Brachy Application Setup Delivery Instruction Module consists of a Sequence of one or more tasks.​

Table C.8.8.30-1. RT Brachy Application Setup Delivery Instruction Module Attributes​

Attribute Name​

Tag​

Type​

Description​

Referenced RT Plan Sequence​

(300C,0002)​

1​

Reference to a single RT Plan SOP Instance containing all the​

 

 

 

brachy application setups and the fraction group referenced in this​

 

 

 

SOP Instance.​

 

 

 

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

>Include Table C.17-3 “Hierarchical SOP Instance Reference​

 

Macro Attributes”​

 

 

 

Referenced Fraction Group​

(300C,0022)​

1​

Indicates which fraction group of the referenced RT Plan in the​

Number​

 

 

Referenced RT Plan Sequence (300C,0002) is to be treated in the​

 

 

 

treatment session.​

Current Fraction Number​

(3008,0022)​

1​

The index of the fraction that is to be delivered or completed in this​

 

 

 

treatment session.​

See Section C.8.8.30.3.​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 855​

Attribute Name​

Tag​

Type​

Description​

 

Continuation Pulse Number​

(0074,1404)​

1C​

The index of the pulse that is to be delivered or completed in this​

 

 

 

treatment session.​

 

 

 

 

Required if Brachy Treatment Type (300A,0202) of the referenced​

 

 

 

RT Plan in the Referenced RT Plan Sequence (300C,0002) is PDR​

 

 

 

and if Treatment Delivery Type (300A,00CE) is CONTINUATION​

 

 

 

in any of the Items in the Brachy Task Sequence (0074,1401).​

 

 

 

See Section C.8.8.30.4.​

 

Brachy Task Sequence​

(0074,1401)​

1​

Specification of Brachy Application Setups to be delivered.​

 

 

 

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

 

 

 

 

See Section C.8.8.30.1.​

 

>Treatment Delivery Type​

(300A,00CE)​

1​

Delivery Type of treatment.​

 

 

 

 

Enumerated Values:​

 

 

 

 

TREATMENT​ normal patient treatment​

 

 

 

 

CONTINUATION​continuation of interrupted treatment​

 

 

 

See Section C.8.8.30.2.​

 

>Continuation Start Total​

(0074,1402)​

1C​

Total Reference Air Kermawithin the Application Setup referenced​

Reference Air Kerma​

 

 

by Referenced Brachy Application Setup Number (300C,000C) at​

 

 

 

which treatment delivery starts.​

 

 

 

 

Required if Delivery Type (300A,00CE) is CONTINUATION.​

>Continuation End Total​

(0074,1403)​

1C​

Total Reference Air Kermawithin the Application Setup referenced​

Reference Air Kerma​

 

 

by Referenced Brachy Application Setup Number (300C,000C) at​

 

 

 

which treatment delivery ends.​

 

 

 

 

Required if Delivery Type (300A,00CE) is CONTINUATION.​

>ReferencedBrachyApplication​

(300C,000C)​

1​

Brachy Application Setup Number (300A,0234) within Brachy​

Setup Number​

 

 

Application Setup Sequence (300A,0230) in the referenced RT​

 

 

 

Plan.​

 

 

 

 

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

 

>Channel Delivery Order​

(0074,1405)​

3​

The order in which the channels are to be delivered.​

 

Sequence​

 

 

One or more Items are permitted in this Sequence.​

 

 

 

 

 

>>ReferencedChannelNumber​

(0074,1406)​

1​

The channel to be delivered, specified by the value of Channel​

 

 

 

Number (300A,0282) in referenced RT Plan.​

 

>>ChannelDeliveryOrderIndex​

(0074,140C)​

1​

The order of delivery of this channel, monotonically increasing by​

 

 

 

1, starting from 1, where number 1 is the first channel to be​

 

 

 

delivered.​

 

>Channel Delivery Continuation​

(0074,140D)​

1C​

Thetreatmenttimeweightsforchannelstobedeliveredtocomplete​

Sequence​

 

 

a previously interrupted fraction.​

 

 

 

 

Required if Delivery Type (300A,00CE) is CONTINUATION.​

 

 

 

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

 

>>ReferencedChannelNumber​

(0074,1406)​

1​

The channel to be delivered, specified by the value of Channel​

 

 

 

Number (300A,0282) in referenced RT Plan.​

 

- Standard -​

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