Материал: part03

Page 706​

Attribute Name​

Tag​

Type​

Attribute Description​

Pixel Intensity Relationship​

(0028,1041)​

1C​

The sign of the relationship between the Pixel sample values stored in​

Sign​

Pixel Data (7FE0,0010) and the X-Ray beam intensity.​

Required if Pixel Intensity Relationship (0028,1040) is present.​

Enumerated Values:​

+1​Lower pixel values correspond to less X-Ray beam intensity​

-1​ Higher pixel values correspond to less X-Ray beam intensity​

See Section C.8.11.3.1.2 for further explanation.​

RT Image Label​

(3002,0002)​

1​

User-defined label for RT Image.​

RT Image Name​

(3002,0003)​

3​

User-defined name for RT Image.​

RT Image Description​

(3002,0004)​

3​

User-defined description of RT Image.​

Image Type​

(0008,0008)​

1​

Image identification characteristics (see Section C.7.6.1.1.2).​

Defined Terms for Value 3:​

DRR​

digitally reconstructed radiograph​

PORTAL​ digital portal image or portal film image​

SIMULATOR​conventional simulator image​

RADIOGRAPH​radiographic image​

BLANK​

image pixels set to background value​

FLUENCE​

fluence map​

Conversion Type​

(0008,0064)​

2​

Describes the kind of image conversion.​

Defined Terms:​

DV​ Digitized Video​

DI​ Digital Interface​

DF​ Digitized Film​

WSD​Workstation​

Reported Values Origin​

(3002,000A)​

2C​

Describes the origin of the parameter values reported in the image.​

Required if Value 3 of Image Type (0008,0008) is SIMULATOR or​

PORTAL.​

Enumerated Values:​

OPERATOR​manually entered by operator​

PLAN​

planned parameter values​

ACTUAL​ electronically recorded​

RT Image Plane​

(3002,000C)​

1​

Describes whether or not image plane is normal to beam axis.​

Enumerated Values:​

NORMAL​ image plane normal to beam axis​

NON_NORMAL​image plane non-normal to beam axis​

X-Ray Image Receptor​

(3002,000D)​

3​

Positionin(x,y,z)coordinatesoforiginofIECX-RAYIMAGERECEPTOR​

Translation​

System in the IEC GANTRY coordinate system (mm). See Note 2.​

X-Ray Image Receptor​

(3002,000E)​

2​

X-Ray Image Receptor Angle i.e., orientation of IEC X-RAY IMAGE​

Angle​

RECEPTORcoordinatesystemwithrespecttoIECGANTRYcoordinate​

system (degrees). See Section C.8.8.2.2.​

RT Image Orientation​

(3002,0010)​

2C​

The direction cosines of the first row and the first column with respect​

to the IEC X-RAY IMAGE RECEPTOR coordinate system. Required if​

RT Image Plane (3002,000C) is NON_NORMAL. May be present​

otherwise.​

Page 707​

Attribute Name​

Tag​

Type​

Attribute Description​

Image Plane Pixel Spacing​

(3002,0011)​

2​

Physical distance (in mm) between the center of each image pixel,​

specified by a numeric pair - adjacent row spacing (delimiter) adjacent​

column spacing. See Section C.8.8.2.3 and Section 10.7.1.3 for further​

explanation.​

RT Image Position​

(3002,0012)​

2​

The x and y coordinates (in mm) of the upper left hand corner of the​

image, in the IEC X-RAY IMAGE RECEPTOR coordinate system. This​

is the center of the first pixel transmitted. See Section C.8.8.2.7.​

Radiation Machine Name​

(3002,0020)​

2​

User-defined name identifying radiation machine used in acquiring or​

computing image (i.e., name of conventional simulator, electron​

accelerator,X-Raydevice,ormachinemodeledwhencalculatingDRR).​

Primary Dosimeter Unit​

(300A,00B3)​

2​

Measurement unit of machine dosimeter.​

Enumerated Values:​

MU​

Monitor Unit​

MINUTE​minute​

Radiation Machine SAD​

(3002,0022)​

2​

Radiation source to Gantry rotation axis distance of radiation machine​

used in acquiring or computing image (mm).​

Radiation Machine SSD​

(3002,0024)​

3​

Source to Patient surface distance (in mm) of radiation machine used​

in acquiring or computing image.​

RT Image SID​

(3002,0026)​

2​

Distance from radiation machine source to image plane (in mm) along​

radiation beam axis. See Section C.8.8.2.3.​

SourcetoReferenceObject​

(3002,0028)​

3​

Source to reference object distance (in mm), as used for magnification​

Distance​

calculation of RADIOGRAPH and SIMULATOR images.​

Referenced RT Plan​

(300C,0002)​

3​

Sequence of one Class/Instance pair describing RT Plan associated​

Sequence​

with image.​

Only a single Item is permitted in this Sequence.​

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

Attributes”​

Referenced Beam Number​

(300C,0006)​

3​

Uniquely identifies the corresponding N-segment treatment beam​

specified by Beam Number (300A,00C0) within Beam Sequence​

(300A,00B0) in RT Beams Module within the RT Plan referenced in​

ReferencedRTPlanSequence(300C,0002)ortheIonBeamSequence​

(300A,03A2) in the RT Ion Beams Module within the RT Ion Plan​

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

Referenced Fraction Group​

(300C,0022)​

3​

Identifier of Fraction Group within RT Plan referenced in Referenced RT​

Number​

Plan Sequence (300C,0002).​

Fraction Number​

(3002,0029)​

3​

Fraction Number of fraction during which image was acquired, within​

Fraction Group referenced by Referenced Fraction Group Number​

(300C,0022)withinRTPlanreferencedinReferencedRTPlanSequence​

(300C,0002).​

Start Cumulative Meterset​

(300C,0008)​

3​

Cumulative Meterset Weight within Beam referenced by Referenced​

Weight​

Beam Number (300C,0006) at which image acquisition starts.​

End Cumulative Meterset​

(300C,0009)​

3​

Cumulative Meterset Weight within Beam referenced by Referenced​

Weight​

Beam Number (300C,0006) at which image acquisition ends.​

Exposure Sequence​

(3002,0030)​

3​

Sequence of Exposure parameter sets, corresponding to exposures​

used in generating the image.​

Page 708​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>Referenced Frame​

(0008,1160)​

1C​

Identifies corresponding image frame in multi-frame image. Required if​

Number​

there is more than one Item in Exposure Sequence (3002,0030), and​

image is a multi-frame image.​

>KVP​

(0018,0060)​

2C​

Peak kilo voltage output (kV) of X-Ray generator used to acquire image.​

RequiredifValue3ofImageType(0008,0008)isPORTAL,SIMULATOR​

or RADIOGRAPH.​

>Primary Fluence Mode​

(3002,0050)​

3​

Sequence defining whether the primary fluence of the treatment beam​

Sequence​

uses a non-standard fluence-shaping.​

Only a single Item is permitted in this Sequence.​

>>Fluence Mode​

(3002,0051)​

1​

Describes whether the fluence shaping is the standard mode for the​

beam or an alternate.​

Enumerated Values:​

STANDARD​ Uses standard fluence-shaping​

NON_STANDARD​Uses a non-standard fluence-shaping mode​

>>Fluence Mode ID​

(3002,0052)​

1C​

Identifier for the specific fluence-shaping mode.​

Required if Fluence Mode (3002,0051) has value NON_STANDARD.​

>X-Ray Tube Current​

(0018,1151)​

2C​

Imaging device X-Ray Tube Current (mA). Required if Value 3 of Image​

Type (0008,0008) is SIMULATOR or RADIOGRAPH. May be present​

otherwise.​

>X-RayTubeCurrentinmA​

(0018,9330)​

3​

X-Ray Tube Current in mA. An average in the case of fluoroscopy​

(continuous radiation mode).​

>Exposure Time​

(0018,1150)​

2C​

Time of X-Ray exposure (msec). Required if Value 3 of Image Type​

(0008,0008) is SIMULATOR or RADIOGRAPH. May be present​

otherwise.​

See Section C.8.8.2.8.​

>Exposure Time in ms​

(0018,9328)​

3​

Duration of X-Ray exposure in msec.​

See Section C.8.8.2.8.​

>Meterset Exposure​

(3002,0032)​

2C​

Treatment machine Meterset duration over which image has been​

acquired,specifiedinMonitorunits(MU)orminutesasdefinedbyPrimary​

Dosimeter Unit (300A,00B3). Required if Value 3 of Image Type​

(0008,0008) is PORTAL.​

See Section C.8.8.2.8.​

>Diaphragm Position​

(3002,0034)​

3​

Positionsofdiaphragmjawpairs(inmm)inIECBEAMLIMITINGDEVICE​

coordinate axis in the IEC order X1, X2, Y1, Y2.​

>Beam Limiting Device​

(300A,00B6)​

3​

Sequence of beam limiting device (collimator) jaw or leaf (element)​

Sequence​

positions for given exposure.​

One or more Items are permitted in this Sequence.​

>>RTBeamLimitingDevice​

(300A,00B8)​

1​

Type of beam limiting device (collimator).​

Type​

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​

DICOM PS3.3 2020a - Information Object Definitions​

Page 709​

Attribute Name​

Tag​

Type​

Attribute Description​

>>Source to Beam Limiting​

(300A,00BA)​

3​

Radiation source to beam limiting device (collimator) distance (mm).​

Device Distance​

>>NumberofLeaf/JawPairs​

(300A,00BC)​

1​

Number of leaf (element) or jaw pairs (equal to 1 for standard beam​

limiting device jaws).​

>>LeafPositionBoundaries​

(300A,00BE)​

2C​

Boundaries(inmm)ofbeamlimitingdevice(collimator)leaves(elements)​

inIECBEAMLIMITINGDEVICEcoordinateaxisappropriatetoRTBeam​

Limiting Device Type (300A,00B8), i.e., X-axis for MLCY, Y-axis for​

MLCX. Contains N+1 values, where N is the Number of Leaf/Jaw Pairs​

(300A,00BC), starting from Leaf (Element) Pair 1. Required if RT Beam​

Limiting Device Type (300A,00B8) is MLCX or MLCY. May be present​

otherwise.​

>>Leaf/Jaw Positions​

(300A,011C)​

1​

Positions of beam limiting device (collimator) leaf or jaw (element) pairs​

(in mm) in IEC BEAM LIMITING DEVICE coordinate axis appropriate to​

RT Beam Limiting Device Type (300A,00B8), e.g., X-axis for MLCX,​

Y-axis for MLCY). Contains 2N values, where N is the Number of​

Leaf/Jaw Pairs (300A,00BC), in IEC leaf (element) subscript order 101,​

102, … 1N, 201, 202, … 2N.​

>Gantry Angle​

(300A,011E)​

3​

Treatment machine gantry angle, i.e., orientation of IEC GANTRY​

coordinate system with respect to IEC FIXED REFERENCE coordinate​

system (degrees).​

>Gantry Pitch Angle​

(300A,014A)​

3​

Gantry Pitch Angle. i.e., the rotation of the IEC GANTRY coordinate​

system about the X-axis of the IEC GANTRY coordinate system​

(degrees). See Section C.8.8.25.6.5.​

>Beam Limiting Device​

(300A,0120)​

3​

Treatment machine beam limiting device (collimator) angle, i.e.,​

Angle​

orientation of IEC BEAM LIMITING DEVICE coordinate system with​

respect to IEC GANTRY coordinate system (degrees).​

>Patient Support Angle​

(300A,0122)​

3​

Patient Support angle, i.e., orientation of IEC PATIENT SUPPORT​

coordinate system with respect to IEC FIXED REFERENCE coordinate​

system (degrees).​

>Table Top Pitch Angle​

(300A,0140)​

3​

TableTopPitchAngle,i.e.,therotationoftheIECTABLETOPcoordinate​

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

(degrees). See Section C.8.8.25.6.2.​

>Table Top Roll Angle​

(300A,0144)​

3​

TableTopRollAngle,i.e.,therotationoftheIECTABLETOPcoordinate​

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

(degrees). See Section C.8.8.25.6.2.​

>TableTopVerticalPosition​

(300A,0128)​

3​

TableTopVerticalpositioninIECTABLETOPcoordinatesystem(mm).​

>Table Top Longitudinal​

(300A,0129)​

3​

Table Top Longitudinal position in IEC TABLE TOP coordinate system​

Position​

(mm).​

>Table Top Lateral Position​

(300A,012A)​

3​

Table Top Lateral position in IEC TABLE TOP coordinate system (mm).​

>Applicator Sequence​

(300A,0107)​

3​

Sequence of Applicators associated with Beam.​

Only a single Item is permitted in this Sequence.​

>>Applicator ID​

(300A,0108)​

1​

User or machine supplied identifier for Applicator.​

>>Accessory Code​

(300A,00F9)​

3​

An identifier for the accessory intended to be read by a device such as​

a bar-code reader.​

Page 710​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>>Applicator Type​

(300A,0109)​

1​

Type of Applicator.​

Defined Terms:​

ELECTRON_SQUARE​square electron applicator​

ELECTRON_RECT​ rectangular electron applicator​

ELECTRON_CIRC​ circular electron applicator​

ELECTRON_SHORT​short electron applicator​

ELECTRON_OPEN​open (dummy) electron applicator​

PHOTON_SQUARE​square photon applicator​

PHOTON_RECT​ rectangular photon applicator​

PHOTON_CIRC​ circular photon applicator​

INTRAOPERATIVE​ intraoperative (custom) applicator​

STEREOTACTIC​ stereotactic applicator (deprecated)​

>>Applicator Geometry​

(300A,0431)​

3​

Describes the applicator aperture geometry.​

Sequence​

Only a single Item is permitted in this Sequence.​

>>>Applicator Aperture​

(300A,0432)​

1​

Aperture shape of the applicator.​

Shape​

Defined Terms:​

SYM_SQUARE​ Asquare-shapedaperturesymmetricaltothecentral​

axis.​

SYM_RECTANGLE​A rectangular-shaped aperture symmetrical to the​

central axis.​

SYM_CIRCULAR​Acircular-shapedaperturesymmetricaltothecentral​

axis.​

>>>Applicator Opening​

(300A,0433)​

1C​

Opening (in mm) of the applicator's aperture in IEC BEAM LIMITING​

DEVICEcoordinatesystem.Incaseofsquare-shapedapplicatorcontains​

the length of the sides of the square. In case of circular-shaped​

applicators, contains the diameter of the circular aperture.​

Required if Applicator Aperture Shape (300A,0432) is SYM_SQUARE​

or SYM_CIRCULAR.​

>>>Applicator Opening X​

(300A,0434)​

1C​

Opening (in mm) of the applicator's aperture in IEC BEAM LIMITING​

DEVICE coordinate system in X-Direction.​

Required if Applicator Aperture Shape (300A,0432) is​

SYM_RECTANGLE.​

>>>Applicator Opening Y​

(300A,0435)​

1C​

Opening (in mm) of the applicator's aperture in IEC BEAM LIMITING​

DEVICE coordinate system in Y-Direction.​

Required if Applicator Aperture Shape (300A,0432) is​

SYM_RECTANGLE.​

>> Source to Applicator​

(300A,0436)​

3​

Radiation source to applicator mounting position distance (in mm) for​

Mounting Position Distance​

current applicator.​

>>Applicator Description​

(300A,010A)​

3​

User-defined description for Applicator.​

>General Accessory​

(300A,0420)​

3​

Sequence of General Accessories associated with the beam producing​

Sequence​

this image.​

One or more Items are permitted in this Sequence.​

>>General Accessory​

(300A,0424)​

1​

Identification Number of the General Accessory. The value shall be​

Number​

unique within the Sequence.​

>>General Accessory ID​

(300A,0421)​

1​

User or machine supplied identifier for General Accessory.​