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Page 736​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>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.​

Note​

Tolerance Tables may be used to compare planned with delivered machine parameters. If the absolute difference between​ the planned and delivered values exceeds the Tolerance Table value, treatment may be inhibited or the operator may be​ warned.​

C.8.8.12 RT Patient Setup Module​

The RT Patient Setup Module contains information describing the positioning of the patient with respect to the treatment machine,​ along with any fixation devices used. It also describes the shielding devices applied to the patient. The Module contains a Sequence​ of patient setup descriptions, each of which may be referenced by one of more beams or brachy application setups.​

Table C.8-48. RT Patient Setup Module Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Patient Setup Sequence​

(300A,0180)​

1​

Sequence of patient setup data for current plan.​

 

 

 

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

>Patient Setup Number​

(300A,0182)​

1​

Identification number of the Patient Setup. The value of Patient​

 

 

 

Setup Number (300A,0182) shall be unique within the RT Plan in​

 

 

 

which it is created.​

>Patient Setup Label​

(300A,0183)​

3​

The user-defined label for the Patient Setup.​

>Patient Position​

(0018,5100)​

1C​

Patient position descriptor relative to the equipment. Required if​

 

 

 

Patient Additional Position (300A,0184) is not present. See​

 

 

 

Section C.8.8.12.1.2 for Defined Terms and further explanation.​

>Patient Additional Position​

(300A,0184)​

1C​

User-defined additional description of patient position. Required if​

 

 

 

Patient Position (0018,5100) is not present.​

>Referenced Setup Image​

(300A,0401)​

3​

Sequence of setup verification images for this patient setup.​

Sequence​

 

 

One or more Items are permitted in this Sequence.​

 

 

 

 

 

 

See Section C.8.8.12.1.1​

>>Setup Image Comment​

(300A,0402)​

3​

Comment on the Setup Image.​

>>Include Table 10-3 “Image SOP Instance Reference Macro​

 

Attributes”​

 

 

 

>Fixation Device Sequence​

(300A,0190)​

3​

Sequence of Fixation Devices used in Patient Setup.​

 

 

 

One or more Items are permitted in this Sequence.​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 737​

Attribute Name​

Tag​

Type​

Attribute Description​

 

>>Fixation Device Type​

(300A,0192)​

1​ Type of Fixation Device used during in Patient Setup.​

 

 

 

 

Defined Terms:​

 

 

 

 

BITEBLOCK​

 

 

 

 

HEADFRAME​

 

 

 

 

MASK​

 

 

 

 

MOLD​

 

 

 

 

CAST​

 

 

 

 

HEADREST​

 

 

 

 

BREAST_BOARD​

 

 

 

 

BODY_FRAME​

 

 

 

 

VACUUM_MOLD​

 

 

 

 

WHOLE_BODY_POD​

 

 

 

 

RECTAL_BALLOON​

 

>>Fixation Device Label​

(300A,0194)​

2​ User-defined label identifier for Fixation Device.​

 

>>Fixation Device Description​

(300A,0196)​

3​ User-defined description of Fixation Device.​

 

>>Fixation Device Position​

(300A,0198)​

3​ Position/Notch number of Fixation Device.​

 

>>Fixation Device Pitch Angle​

(300A,0199)​

3​ The Fixation Device Pitch Angle, i.e., orientation of PITCHED​

 

 

 

FIXATIONDEVICEcoordinatesystemwithrespecttoIECPATIENT​

 

 

 

SUPPORT coordinate system (degrees). Pitching is the rotation​

 

 

 

around IEC PATIENT SUPPORT X-axis.​

 

>>Fixation Device Roll Angle​

(300A,019A)​

3​ The Fixation Device Roll Angle, i.e., orientation of ROLLED​

 

 

 

FIXATION DEVICE coordinate system with respect to IEC​

 

 

 

PITCHEDFIXATIONDEVICEcoordinatesystem(degrees).Rolling​

 

 

 

is the rotation around IEC PATIENT SUPPORT Y-axis.​

>>Accessory Code​

(300A,00F9)​

3​ Anidentifierfortheaccessoryintendedtobereadbyadevicesuch​

 

 

 

as a bar-code reader.​

 

>Shielding Device Sequence​

(300A,01A0)​

3​ Sequence of Shielding Devices used in Patient Setup.​

 

 

 

One or more Items are permitted in this Sequence.​

 

>>Shielding Device Type​

(300A,01A2)​

1​ Type of Shielding Device used in Patient Setup.​

 

 

 

 

Defined Terms:​

 

 

 

 

GUM​

 

 

 

 

EYE​

 

 

 

 

GONAD​

 

>>Shielding Device Label​

(300A,01A4)​

2​ User-defined label for Shielding Device.​

 

>>Shielding Device Description​

(300A,01A6)​

3​ User-defined description of Shielding Device.​

 

>>Shielding Device Position​

(300A,01A8)​

3​ Position/Notch number of Shielding Device.​

 

>>Accessory Code​

(300A,00F9)​

3​ Anidentifierfortheaccessoryintendedtobereadbyadevicesuch​

 

 

 

as a bar-code reader.​

 

>Setup Technique​

(300A,01B0)​

3​ Setup Technique used in Patient Setup.​

 

Defined Terms:​

ISOCENTRIC​

FIXED_SSD​

TBI​

BREAST_BRIDGE​

SKIN_APPOSITION​

>Setup Technique Description​

(300A,01B2)​

3​ User-defined description of Setup Technique.​

- Standard -​

Page 738​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>Setup Device Sequence​

(300A,01B4)​

3​ Sequence of devices used for patient alignment in Patient Setup.​

 

 

 

One or more Items are permitted in this Sequence.​

>>Setup Device Type​

(300A,01B6)​

1​ Type of Setup Device used for patient alignment.​

 

 

 

Defined Terms:​

 

 

 

 

LASER_POINTER​

 

 

 

 

DISTANCE_METER​

 

 

 

 

TABLE_HEIGHT​

 

 

 

 

MECHANICAL_PTR​

 

 

 

 

ARC​

 

>>Setup Device Label​

(300A,01B8)​

2​ User-defined label for Setup Device used for patient alignment.​

>>Setup Device Description​

(300A,01BA)​

3​ User-defined description for Setup Device used for patient​

 

 

 

alignment.​

 

>>Setup Device Parameter​

(300A,01BC)​

2​ Setup Parameter for Setup Device in appropriate IEC 61217​

 

 

 

coordinate system.​

 

 

 

 

Units shall be mm for distances and degrees for angles.​

>>SetupReferenceDescription​

(300A,01D0)​

3​ User-defined description of Setup Reference used for patient​

 

 

 

alignment.​

 

>>Accessory Code​

(300A,00F9)​

3​ Anidentifierfortheaccessoryintendedtobereadbyadevicesuch​

 

 

 

as a bar-code reader.​

 

>Table Top Vertical Setup​

(300A,01D2)​

3​ Vertical Displacement in IEC TABLE TOP coordinate system (in​

Displacement​

 

 

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

 

 

 

patient positioning performed using setup and treatment position.​

>Table Top Longitudinal Setup​

(300A,01D4)​

3​ Longitudinal Displacement in IEC TABLE TOP coordinate system​

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)​

3​ Lateral Displacement in IEC TABLE TOP coordinate system (in​

Displacement​

 

 

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

 

 

 

patient positioning performed using setup and treatment position.​

>Motion Synchronization​

(300A,0410)​

3​ Sequence of Motion Synchronization.​

Sequence​

 

 

One or more Items are permitted in this Sequence.​

 

 

 

>>Respiratory Motion​

(0018,9170)​

1​ Technique applied to reduce respiratory motion artifacts.​

Compensation Technique​

 

 

Defined Terms:​

 

 

 

 

 

 

 

 

NONE​

 

 

 

 

BREATH_HOLD​

image acquisition shorter than respiratory​

 

 

 

REALTIME​

 

 

 

 

cycle​

 

 

 

GATING​

Prospective gating​

 

 

 

TRACKING​

prospective through-plane or in-plane​

 

 

 

 

motion tracking​

 

 

 

PHASE_ORDERING​ prospective phase ordering​

 

 

 

PHASE_RESCANNING​prospectivetechniques,suchasreal-time​

 

 

 

 

averaging, diminishing variance and​

 

 

 

 

motion adaptive gating​

 

 

 

RETROSPECTIVE​

retrospective gating​

 

 

 

CORRECTION​

retrospective image correction​

 

 

 

UNKNOWN​

technique not known​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 739​

Attribute Name​

Tag​

Type​

Attribute Description​

 

>>Respiratory Signal Source​

(0018,9171)​

1​ Signal source from which respiratory motion is derived.​

 

 

Defined Terms:​

 

 

 

 

NONE​

 

 

 

 

BELT​

 

 

 

 

NASAL_PROBE​

 

 

 

 

CO2_SENSOR​

MR navigator and organ edge detection​

 

 

NAVIGATOR​

 

 

MR_PHASE​

phase (of center k-space line)​

 

 

 

ECG​

baseline demodulation of the ECG​

 

 

SPIROMETER​

Signal derived from flow sensor​

 

 

EXTERNAL_MARKER​Signal determined from external motion​

 

 

 

surrogate​

 

 

 

INTERNAL_MARKER​Signal determined from internal motion​

 

 

 

surrogate​

 

 

 

IMAGE​

Signal derived from an image​

 

 

 

UNKNOWN​

Signal source not known​

 

>>Respiratory Motion​

(0018,9185)​

3​ Description of respiratory motion compensation technique.​

Compensation Technique​

 

 

 

 

Description​

 

 

 

 

>>RespiratorySignalSourceID​

(0018,9186)​

3​ Identifies the device providing the respiratory signal.​

 

C.8.8.12.1 RT Patient Setup Module Attributes​

C.8.8.12.1.1 Referenced Setup Image Sequence​

ImageswithmodalitySCorVLserveasvisiblelightphotosforvisualsetupcontrol.ImageswithmodalityRTIMAGEserveasreference​ images on plan level. RT Images present in this Sequence shall not be referenced in the Referenced Reference Image Sequence​ (300C,0042) of the RT Beams Module.​

C.8.8.12.1.2 Patient Position​

Defined Terms for Patient Position shall be those specified in Section C.7.3.1.1.2, plus the following:​

Defined Terms:​

SITTING​ In the sitting position, the patient's face is towards the front of the chair​

C.8.8.13 RT Fraction Scheme Module​

The RT Fraction Scheme Module contains Attributes that describe a single or multiple scheme of dose descriptions. Each Sequence​ Itemcontainsdosespecificationinformation,fractionationpatterns,andeitherbeamorbrachytherapyapplicationsetupspecifications.​ The design of the RT Fraction Scheme Module allows a beam or brachytherapy application setup to be used in multiple fraction​ schemes.​

Table C.8-49. RT Fraction Scheme Module Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Fraction Group Sequence​

(300A,0070)​

1​ Sequence of Fraction Groups in current Fraction Scheme.​

 

 

 

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

>Fraction Group Number​

(300A,0071)​

1​ Identification number of the Fraction Group. The value of Fraction​

 

 

 

Group Number (300A,0071) shall be unique within the RT Plan in​

 

 

 

which it is created.​

>Fraction Group Description​

(300A,0072)​

3​ The user defined description for the fraction group.​

- Standard -​

Page 740​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>Referenced Dose Sequence​

(300C,0080)​

3​

Related instances of RT Dose (for grids, isodose curves and​

 

 

 

named/unnamed point doses).​

 

 

 

One or more Items are permitted in this Sequence.​

 

 

 

See Note 1.​

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

 

Attributes”​

 

 

 

>Referenced Dose Reference​

(300C,0050)​

3​

Sequence of Dose References for the current Fraction Group.​

Sequence​

 

 

One or more Items are permitted in this Sequence.​

 

 

 

>>ReferencedDoseReference​

(300C,0051)​

1​

Uniquely identifies Dose Reference specified by Dose Reference​

Number​

 

 

Number (300A,0012) within Dose Reference Sequence (300A,0010)​

 

 

 

in RT Prescription Module.​

>>Constraint Weight​

(300A,0021)​

3​

Relative importance of satisfying constraint, where high values​

 

 

 

represent more important constraints.​

>>Delivery Warning Dose​

(300A,0022)​

3​

The dose (in Gy) that when reached or exceeded should cause some​

 

 

 

action to be taken.​

>>Delivery Maximum Dose​

(300A,0023)​

3​

Themaximumdose(inGy)thatcanbedeliveredtothedosereference.​

>>Target Minimum Dose​

(300A,0025)​

3​

Minimumpermitteddose(inGy)toDoseReferenceifDoseReference​

 

 

 

Type (300A,0020) of referenced Dose Reference is TARGET.​

>>Target Prescription Dose​

(300A,0026)​

3​

Prescribed dose (in Gy) to Dose Reference if Dose Reference Type​

 

 

 

(300A,0020) of referenced Dose Reference is TARGET.​

>>Target Maximum Dose​

(300A,0027)​

3​

Maximumpermitteddose(inGy)toDoseReferenceifDoseReference​

 

 

 

Type (300A,0020) of referenced Dose Reference is TARGET.​

>>Target Underdose Volume​

(300A,0028)​

3​

Maximumpermittedfraction(inpercent)ofTargettoreceivelessthan​

Fraction​

 

 

the Target Prescription Dose (300A,0027) if Dose Reference Type​

 

 

 

(300A,0020) of referenced Dose Reference is TARGET and Dose​

 

 

 

ReferenceStructureType(300A,0014)ofreferencedDoseReference​

 

 

 

is VOLUME.​

>>Organ at Risk Full-volume​

(300A,002A)​

3​

Maximum dose (in Gy) to entire Dose Reference if Dose Reference​

Dose​

 

 

Type(300A,0020)ofreferencedDoseReferenceisORGAN_AT_RISK​

 

 

 

and Dose Reference Structure Type (300A,0014) of referenced Dose​

 

 

 

Reference is VOLUME.​

>>Organ at Risk Limit Dose​

(300A,002B)​

3​

Maximum permitted dose (in Gy) to any part of Dose Reference if​

 

 

 

Dose Reference Type (300A,0020) of referenced Dose Reference is​

 

 

 

ORGAN_AT_RISK and Dose Reference Structure Type (300A,0014)​

 

 

 

of referenced Dose Reference is VOLUME.​

>>Organ at Risk Maximum​

(300A,002C)​

3​

Maximum dose (in Gy) to non-overdosed part of Dose Reference if​

Dose​

 

 

Dose Reference Type (300A,0020) of referenced Dose Reference is​

 

 

 

ORGAN_AT_RISK and Dose Reference Structure Type (300A,0014)​

 

 

 

of referenced Dose Reference is VOLUME.​

>>Organ at Risk Overdose​

(300A,002D)​

3​

Maximum permitted fraction (in percent) of Organ at Risk to receive​

Volume Fraction​

 

 

more than the Organ at Risk Maximum Dose if Dose Reference Type​

 

 

 

(300A,0020)ofreferencedDoseReferenceisORGAN_AT_RISKand​

 

 

 

Dose Reference Structure Type (300A,0014) of referenced Dose​

 

 

 

Reference is VOLUME.​

>NumberofFractionsPlanned​

(300A,0078)​

2​

Totalnumberoftreatments(Fractions)prescribedforcurrentFraction​

 

 

 

Group.​

>Number of Fraction Pattern​

(300A,0079)​

3​

Number of digits in Fraction Pattern (300A,007B) used to represent​

Digits Per Day​

 

 

one day. See Note 2.​

- Standard -​

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