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DICOM PS3.3 2020a - Information Object Definitions​

Page 801​

Attribute Name​

Tag​

Type​

Attribute Description​

 

>Referenced Dose Reference​

(300C,0051)​

3​ Uniquely identifies Dose Reference specified by Dose​

Number​

 

 

ReferenceNumber(300A,0012)inDoseReferenceSequence​

 

 

 

(300A,0010) in RT Prescription Module of referenced RT Plan​

 

 

 

referenced in Referenced RT Plan Sequence (300C,0002) of​

 

 

 

RT General Treatment Record Module.​

 

>Dose Reference Description​

(300A,0016)​

3​ User-defined description of Dose Reference.​

 

>Cumulative Dose to Dose​

(3008,0052)​

1​ Cumulative Dose delivered to Dose Reference (Gy).​

Reference​

 

 

 

 

Treatment Summary Calculated​

(3008,0050)​

3​ Sequence of references to Calculated Dose References.​

Dose Reference Sequence​

 

 

One or more Items are permitted in this Sequence.​

 

 

 

>Referenced Dose Reference​

(300C,0051)​

3​ Uniquely identifies Dose Reference specified by Dose​

Number​

 

 

ReferenceNumber(300A,0012)inDoseReferenceSequence​

 

 

 

(300A,0010) in RT Prescription Module of referenced RT Plan​

 

 

 

referenced in Referenced RT Plan Sequence (300C,0002) of​

 

 

 

RT General Treatment Record Module.​

 

>Dose Reference Description​

(300A,0016)​

3​ User-defined description of Dose Reference.​

 

>Cumulative Dose to Dose​

(3008,0052)​

1​ Cumulative Dose delivered to Dose Reference (Gy).​

Reference​

 

 

 

 

Note​

The RT Treatment Summary Record IOD may contain references to related RT Treatment Session Record IODs. These​ references are contained within the Referenced Treatment Record Sequence (3008,0030) of the RT General Treatment​ Record Module.​

C.8.8.23.1 Current Treatment Status​

Enumerated Values:​

NOT_STARTED​Patient has not yet begun treatment​ ON_TREATMENT​Patient is currently undergoing treatment​

ON_BREAK​ Patient is currently not undergoing treatment, but a resumption date is known​

SUSPENDED​ Patient is currently not undergoing treatment, but resumption of treatment is planned at an unknown date​ STOPPED​ Patient has stopped treatment without completing the planned course​

COMPLETED​ Patient completed the planned course of treatment​

A change in the Current Treatment Status (or any other field) in a RT Treatment Summary Record Object shall define a new instance​

of the RT Treatment Summary Record IOD.​

C.8.8.24 RT Ion Tolerance Tables Module​

The RT Ion Tolerance Tables Module contains information describing the maximum allowed differences between the planned and​ measured Attributes for Ion therapy.​

Table C.8.8.24-1. RT Ion Tolerance Tables Module Attributes​

Attribute Name​

Tag​

Type​

Description​

Ion Tolerance Table Sequence​

(300A,03A0)​

1​

Sequence of ion tolerance tables to be used for delivery of​

treatment plan.​

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

See Note 1.​

- Standard -​

Page 802​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Description​

>Tolerance Table Number​

(300A,0042)​

1​ Identification number of the Tolerance Table. The value of​

 

 

ToleranceTableNumber(300A,0042)shallbeuniquewithinthe​

 

 

RT Ion Plan in which it is created.​

>Tolerance Table Label​

(300A,0043)​

3​ User-defined label for Tolerance Table.​

>Gantry Angle Tolerance​

(300A,0044)​

3​ Maximum permitted difference (in degrees) between planned​

 

 

and delivered Gantry Angle.​

>Beam Limiting Device Angle​

(300A,0046)​

3​ Maximum permitted difference (in degrees) between planned​

Tolerance​

 

and delivered Beam Limiting Device Angle.​

>Beam Limiting Device Tolerance​

(300A,0048)​

3​ Sequence of beam limiting device (collimator) tolerances.​

Sequence​

 

One or more Items are permitted in this Sequence.​

 

 

>>RT Beam Limiting Device Type​

(300A,00B8)​

1​ Type of beam limiting device (collimator).​

 

 

Enumerated Values:​

 

 

X​

symmetric jaw pair in IEC X direction​

 

 

Y​

symmetric jaw pair in IEC Y direction​

 

 

ASYMX​asymmetric jaw pair in IEC X direction​

 

 

ASYMY​asymmetric pair in IEC Y direction​

 

 

MLCX​multileaf (multi-element) jaw pair in IEC X direction​

 

 

MLCY​multileaf (multi-element) jaw pair in IEC Y direction​

>>Beam Limiting Device Position​

(300A,004A)​

1​ Maximum permitted difference (in mm) between planned and​

Tolerance​

 

deliveredleaf(element)orjawpositionsforcurrentbeamlimiting​

 

 

device (collimator).​

>Patient Support Angle Tolerance​

(300A,004C)​

3​ Maximum permitted difference (in degrees) between planned​

 

 

and delivered Patient Support Angle.​

>Table Top Vertical Position​

(300A,0051)​

3​ Maximum permitted difference (in mm) between planned and​

Tolerance​

 

delivered Table Top Vertical Position.​

>Table Top Longitudinal Position​

(300A,0052)​

3​ Maximum permitted difference (in mm) between planned and​

Tolerance​

 

delivered Table Top Longitudinal Position.​

>Table Top Lateral Position​

(300A,0053)​

3​ Maximum permitted difference (in mm) between planned and​

Tolerance​

 

delivered Table Top Lateral Position.​

>Table Top Pitch Angle Tolerance​

(300A,004F)​

3​ Maximum permitted difference (in degrees) between planned​

 

 

and delivered Table Top Pitch Angle.​

>Table Top Roll Angle Tolerance​

(300A,0050)​

3​ Maximum permitted difference (in degrees) between planned​

 

 

and delivered Table Top Roll Angle.​

>Snout Position Tolerance​

(300A,004B)​

3​ Maximum permitted difference (in mm) between planned and​

 

 

delivered Snout Position.​

>Head Fixation Angle Tolerance​

(300A,0152)​

3​ Maximum permitted difference (in degrees) between planned​

 

 

and delivered Head Fixation Angle (300A,0148).​

>Chair Head Frame Position​

(300A,0153)​

3​ Maximum permitted difference (in mm) between planned and​

Tolerance​

 

delivered Chair Head Frame Position (300A,0151).​

>Fixation Light Azimuthal Angle​

(300A,0154)​

3​ Maximum permitted difference (in degrees) between planned​

Tolerance​

 

and delivered Fixation Light Azimuthal Angle (300A,0356).​

>Fixation Light Polar Angle​

(300A,0155)​

3​ Maximum permitted difference (in mm) between planned and​

Tolerance​

 

delivered Fixation Light Polar Angle (300A,0358).​

Note 1: Tolerance Tables may be used to compare planned values to actual machine values. If the absolute difference between the​ planned and actual values exceeds the Tolerance Table value, treatment may be inhibited or the operator may be warned.​

- Standard -​

DICOM PS3.3 2020a - Information Object Definitions​

Page 803​

C.8.8.25 RT Ion Beams Module​

The RT Ion Beams Module contains information defining equipment parameters for delivery of external Ion radiation beams.​

Table C.8.8.25-1. RT Ion Beams Module Attributes​

Attribute Name​

Tag​

Type​

 

Description​

Ion Beam Sequence​

(300A,03A2)​

1​

Sequence of setup and/or treatment beams for current RT Ion Plan.​

 

 

 

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

>Beam Number​

(300A,00C0)​

1​

Identification number of the Beam. The value of Beam Number​

 

 

 

(300A,00C0)shallbeuniquewithintheRTIonPlaninwhichitiscreated.​

 

 

 

See Section C.8.8.25.1.​

>Beam Name​

(300A,00C2)​

1​

User-defined name for Beam. See Section C.8.8.25.1.​

>Beam Description​

(300A,00C3)​

3​

User-defined description for Beam. See Section C.8.8.25.1.​

>Beam Type​

(300A,00C4)​

1​

Motion characteristic of Beam.​

 

 

 

Enumerated Values:​

 

 

 

STATIC​ all beam parameters remain unchanged during delivery​

 

 

 

DYNAMIC​one or more beam parameters changes during delivery​

>Radiation Type​

(300A,00C6)​

1​

Particle type of Beam.​

 

 

 

Defined Terms:​

 

 

 

 

PHOTON​

 

 

 

 

PROTON​

 

 

 

 

ION​

 

>Radiation Mass Number​

(300A,0302)​

1C​

Mass number of radiation. Required if Radiation Type (300A,00C6) is​

 

 

 

ION​

 

>Radiation Atomic Number​

(300A,0304)​

1C​

Atomic number of radiation. Required if Radiation Type (300A,00C6) is​

 

 

 

ION​

 

>Radiation Charge State​

(300A,0306)​

1C​

Chargestateofradiation.RequiredifRadiationType(300A,00C6)isION​

>Scan Mode​

(300A,0308)​

1​

The method of beam scanning to be used during treatment.​

 

 

 

Defined Terms:​

 

 

 

 

NONE​

No beam scanning is performed.​

 

 

 

UNIFORM​

Between control points, the beam is scanned to​

 

 

 

 

create a uniform lateral fluence distribution across​

 

 

 

 

the field.​

 

 

 

MODULATED​

Between control points, the beam is scanned to​

 

 

 

 

create a modulated lateral fluence distribution​

across the field.​ MODULATED_SPEC​Between control points, the beam is scanned to​

create a modulated lateral fluence distribution​ across the field. The specific scan mode is defined​ by Modulated Scan Mode Type (300A,0309).​

- Standard -​

Page 804​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Description​

>Modulated Scan Mode​

(300A,0309)​

1C​

Defines the specialization of a modulated scan mode.​

Type​

 

 

Defined Terms:​

 

 

 

STATIONARY​The Meterset is delivered while the beam spot is at the​ specified position.​

LEAPING​ ThedeliveryofthespecifiedMetersetforthecurrentspot​ position begins when the spot is at the previous spot​ position but the spot moves as quickly as possible to the​ currentspecifiedspotpositionwheremostoftheMeterset​ is delivered.​

LINEAR​ The beam spot is delivered with uniform flux while​ traveling from one position to the next position​ (continuous).​

MIXED​ Between control points the beam may be delivered by a​ combination of STATIONARY, LEAPING or LINEAR​ modes.​

 

 

Required if Scan Mode (300A,0308) is MODULATED_SPEC.​

 

 

See Section C.8.8.25.8.​

>Treatment Machine Name​

(300A,00B2)​

2​ User-defined name identifying treatment machine to be used for beam​

 

 

delivery. See Section C.8.8.25.2.​

>Manufacturer​

(0008,0070)​

3​ Manufacturer of the equipment to be used for beam delivery.​

>Institution Name​

(0008,0080)​

3​ Institution where the equipment is located that is to be used for beam​

 

 

delivery.​

>Institution Address​

(0008,0081)​

3​ Mailing address of the institution where the equipment is located that is​

 

 

to be used for beam delivery.​

>Institutional Department​

(0008,1040)​

3​ Department in the institution where the equipment is located that is to be​

Name​

 

used for beam delivery.​

>Institutional Department​

(0008,1041)​

3​ A coded description of the type of Department or Service within the​

Type Code Sequence​

 

healthcare facility.​

 

 

Only a single Item is permitted in this Sequence.​

>>Include Table 8.8-1 “Code Sequence Macro Attributes”​BCID 7030 “Institutional Departments, Units and Services”.​

>Manufacturer's Model​

(0008,1090)​

3​ Manufacturer'smodelnameoftheequipmentthatistobeusedforbeam​

Name​

 

delivery.​

>Device Serial Number​

(0018,1000)​

3​ Manufacturer's serial number of the equipment that is to be used for​

 

 

beam delivery.​

>Primary Dosimeter Unit​

(300A,00B3)​

1​ Measurement unit of machine dosimeter.​

 

 

Enumerated Values:​

 

 

MU​Monitor Unit​

 

 

NP​number of particles​

>Referenced Tolerance​

(300C,00A0)​

3​ UniquelyidentifiesToleranceTablespecifiedbyToleranceTableNumber​

Table Number​

 

(300A,0042)withinToleranceTableSequenceinRTIonToleranceTables​

 

 

Module. These tolerances are to be used for verification of treatment​

 

 

machine settings.​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 805​

Attribute Name​

Tag​

Type​

Description​

 

>Virtual Source-Axis​

(300A,030A)​

1​

Distance (in mm) from virtual source position to gantry rotation axis or​

Distances​

 

 

nominalisocenterposition(fixedbeam-lines)oftheequipmenttobeused​

 

 

 

for beam delivery. Specified by a numeric pair - the VSAD in the IEC​

 

 

 

Gantry X direction followed by the VSAD in the IEC Gantry Y direction.​

 

 

 

The VSAD is commonly used for designing apertures in contrast to the​

 

 

 

effective source-axis-distance (ESAD) that is commonly used with the​

 

 

 

inverse square law for calculating the dose decrease with distance. See​

 

 

 

Section C.8.8.25.4.​

 

>Depth Dose Parameters​

(300A,0505)​

3​

Set of parameters describing the depth dose distribution.​

 

Sequence​

 

 

Only a single Item is permitted in this Sequence.​

 

 

 

 

 

>>ReferenceDoseDefinition​

(300A,0512)​

1​

Definition of the 100% reference dose level.​

 

 

 

 

Defined Terms:​

 

 

 

 

HIGHEST​

 

 

 

 

MAXIMUM​

 

 

 

 

CENTER​

 

 

 

 

See Section C.8.8.25.9.​

 

>>Distal Depth​

(300A,0502)​

1​

Penetration depth in water (mm) of the particle excluding any​

 

 

 

user-installed range modifying devices, measured at the Distal Depth​

 

 

 

Fraction (300A,0501).​

 

 

 

 

See Section C.8.8.25.9.​

 

>>Distal Depth Fraction​

(300A,0501)​

1​

Fraction of the value of dose relative to the 100% level defined by​

 

 

 

ReferenceDoseDefinition(300A,0512).ThisdeterminestheDistalDepth​

 

 

 

(300A,0502).​

 

 

 

 

A value of 1.0 refers to 100% of the reference dose level defined by the​

 

 

 

Reference Dose Definition (300A,0512).​

 

 

 

 

See Section C.8.8.25.9.​

 

>>Nominal Range​

(300A,0504)​

1C​

Thedepthsoftheproximalanddistallimitsoftherangemodulatedregion​

Modulated Region Depths​

 

 

in water.​

 

 

 

 

Contains two values (in mm). The first value defines the depth of the​

 

 

 

proximal limit. The second value defines the depth of the distal limit.​

 

 

 

Required if Reference Dose Definition (300A,0512) has the value​

 

 

 

CENTER.​

 

 

 

 

See Section C.8.8.25.9.​

 

>>Nominal Range​

(300A,0503)​

1C​

Fractions of the Reference Dose Definition (300A,0512) defining the​

Modulation Fractions​

 

 

proximalanddistallimitsatwhichtherange-modulatedregionisdefined.​

Containstwovalues.Thefirstvaluedefinesthemodulationfractionvalue​ attheproximallimitandthesecondvaluedefinesthemodulationfraction​ value at the distal limit.​

A value of 1.0 refers to the 100% reference dose level as defined in​

Reference Dose Definition (300A,0512).​

Required if Nominal Range Modulated Region Depths (300A,0504) is​ present.​

See Section C.8.8.25.9.​

- Standard -​

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