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DICOM PS3.3 2020a - Information Object Definitions​

Page 1541​

Attribute Name​

Tag​

Description​

 

>>Gantry Rotation Direction​

(300A,011F)​ DirectionofGantryRotationwhenviewinggantryfromisocenter,forsegment​

 

following Control Point. See Section C.8.8.14.8.​

 

 

Enumerated Values:​

 

 

CW​ clockwise​

 

 

CC​

counter-clockwise​

 

 

NONE​no rotation​

 

>>Beam Limiting Device Angle​

(300A,0120)​ Beam Limiting Device angle in degrees, i.e., orientation of the IEC BEAM​

 

LIMITING DEVICE coordinate system with respect to the IEC GANTRY​

 

coordinate system.​

 

>>BeamLimitingDeviceRotation​

(300A,0121)​ DirectionofBeamLimitingDeviceRotationwhenviewingbeamlimitingdevice​

Direction​

(collimator) from radiation source, for segment following Control Point. See​

 

Section C.8.8.14.8.​

 

 

Enumerated Values:​

 

 

CW​ clockwise​

 

 

CC​

counter-clockwise​

 

 

NONE​no rotation​

 

>>Patient Support Angle​

(300A,0122)​ Patient Support angle in degrees, i.e., orientation of the IEC PATIENT​

 

SUPPORT (turntable) coordinate system with respect to the IEC FIXED​

 

REFERENCE coordinate system.​

 

>>Patient Support Rotation​

(300A,0123)​ Direction of Patient Support Rotation when viewing table from above, for​

Direction​

segment following Control Point. See Section C.8.8.14.8.​

 

 

Enumerated Values:​

 

 

CW​ clockwise​

 

 

CC​

counter-clockwise​

 

 

NONE​no rotation​

 

>>Table Top Eccentric Axis​

(300A,0124)​ Distance (positive) in mm from the IEC PATIENT SUPPORT vertical axis to​

Distance​

the IEC TABLE TOP ECCENTRIC vertical axis.​

 

>>Table Top Eccentric Angle​

(300A,0125)​ Table Top (non-isocentric) angle, i.e., orientation of the IEC TABLE TOP​

 

ECCENTRICcoordinatesystemwithrespecttotheIECPATIENTSUPPORT​

 

coordinate system, in degrees.​

 

>>Table Top Eccentric Rotation​

(300A,0126)​ Direction of Table Top Eccentric Rotation when viewing table from above, for​

Direction​

segment following Control Point. See Section C.8.8.14.8.​

 

 

Enumerated Values:​

 

 

CW​ clockwise​

 

 

CC​

counter-clockwise​

 

 

NONE​no rotation​

 

>>Table Top Vertical Position​

(300A,0128)​ Table Top Vertical position in mm in the IEC TABLE TOP coordinate system.​

 

See Section C.8.8.14.6.​

 

>>Table Top Longitudinal​

(300A,0129)​ Table Top Longitudinal position in mm in the IEC TABLE TOP coordinate​

Position​

system. See Section C.8.8.14.6.​

 

>>Table Top Lateral Position​

(300A,012A)​ Table Top Lateral position in mm in the IEC TABLE TOP coordinate system.​

 

See Section C.8.8.14.6.​

 

>>Table Top Pitch Angle​

(300A,0140)​ Table Top Pitch Angle in degrees, i.e., the rotation of the IEC TABLE TOP​

 

coordinatesystemabouttheX-axisoftheIECTABLETOPcoordinatesystem.​

 

See Section C.8.8.25.6.2.​

 

- Standard -​

Page 1542​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Description​

>>Table Top Pitch Rotation​

(300A,0142)​ DirectionofTableTopPitchRotationwhenviewingthetablealongthepositive​

Direction​

X-axis of the IEC TABLE TOP coordinate system, for segment following​

 

Control Point. See Section C.8.8.14.8 and Section C.8.8.25.6.2.​

 

Enumerated Values:​

 

CW​ clockwise​

 

CC​

counter-clockwise​

 

NONE​no rotation​

>>Table Top Roll Angle​

(300A,0144)​ Table Top Roll Angle in degrees, i.e., the rotation of the IEC TABLE TOP​

 

coordinatesystemabouttheY-axisoftheIECTABLETOPcoordinatesystem.​

 

See Section C.8.8.25.6.2.​

>>Table Top Roll Rotation​

(300A,0146)​ DirectionofTableTopRollRotationwhenviewingthetablealongthepositive​

Direction​

Y-axis of the IEC TABLE TOP coordinate system, for segment following​

 

Control Point. See Section C.8.8.14.8 and Section C.8.8.25.6.2.​

 

Enumerated Values:​

 

CW​ clockwise​

 

CC​

counter-clockwise​

 

NONE​no rotation​

>>Referenced Control Point​

(300C,00F0)​ UniquelyidentifiesControlPointspecifiedbyControlPointIndex(300A,0112)​

Index​

within the Beam referenced by Referenced Beam Number (300C,0006).​

C.31.3 RT Ion Machine Verification Module​

Table C.31-3 specifies the Attributes used to convey the parameters used in external verification of a radiotherapy ion treatment de-​ livery.​

Table C.31-3. RT Ion Machine Verification Module Attributes​

Attribute Name​

Tag​

 

Description​

IonMachineVerificationSequence​

(0074,1046)​

Sequence containing ion machine verification parameters.​

 

 

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

>Ion Control Point Verification​

(0074,104E)​ Beam control points for current ion treatment beam.​

Sequence​

 

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

 

 

>>Meterset Rate Set​

(3008,0045)​

The specified speed of delivery of the specified dose in units specified by​

 

 

Primary Dosimeter Unit (300A,00B3) in referenced RT Plan per minute.​

>>Nominal Beam Energy​

(300A,0114)​ Nominal Beam Energy at control point.​

>>Beam Limiting Device Position​

(300A,011A)​

Beam limiting device (collimator) jaw or leaf (element) positions.​

Sequence​

 

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

 

 

>>>RTBeamLimitingDeviceType​

(300A,00B8)​

Type of beam limiting device (collimator). The value of this Attribute shall​

 

 

correspond to RT Beam Limiting Device Type (300A,00B8) defined in an​

 

 

Item of Beam Limiting Device Sequence (300A,00B6)​

 

 

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​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 1543​

Attribute Name​

Tag​

 

Description​

 

>>>Leaf/Jaw Positions​

(300A,011C)​

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

 

 

in mm in the IEC BEAM LIMITING DEVICE coordinate axis appropriate​

 

 

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

 

 

Y-axisforMLCY.Contains2Nvalues,whereNistheNumberofLeaf/Jaw​

 

 

Pairs (300A,00BC) in Beam Limiting Device Sequence (300A,00B6).​

 

 

Values shall be listed in the IEC leaf (element) subscript order 101, 102,​

 

 

… 1N, 201, 202, … 2N.​

 

>>Gantry Angle​

(300A,011E)​ Gantry angle of radiation source in degrees, i.e., orientation of the IEC​

 

 

GANTRYcoordinatesystemwithrespecttotheIECFIXEDREFERENCE​

 

 

coordinate system.​

 

>>Gantry Rotation Direction​

(300A,011F)​ Direction of Gantry Rotation when viewing gantry from isocenter, for​

 

 

segment following Control Point. See Section C.8.8.14.8.​

 

 

 

Enumerated Values:​

 

 

 

CW​ clockwise​

 

 

 

CC​

counter-clockwise​

 

 

 

NONE​no rotation​

 

>>Beam Limiting Device Angle​

(300A,0120)​

Beam Limiting Device angle in degrees, i.e., orientation of the IEC BEAM​

 

 

LIMITING DEVICE coordinate system with respect to the IEC GANTRY​

 

 

coordinate system.​

 

>>Beam Limiting Device Rotation​

(300A,0121)​

Direction of Beam Limiting Device Rotation when viewing beam limiting​

Direction​

 

device (collimator) from radiation source, for segment following Control​

 

 

Point. See Section C.8.8.14.8.​

 

 

 

Enumerated Values:​

 

 

 

CW​ clockwise​

 

 

 

CC​

counter-clockwise​

 

 

 

NONE​no rotation​

 

>>Patient Support Angle​

(300A,0122)​

Patient Support angle in degrees, i.e., orientation of the IEC PATIENT​

 

 

SUPPORT (turntable) coordinate system with respect to the IEC FIXED​

 

 

REFERENCE coordinate system.​

 

>>Patient Support Rotation​

(300A,0123)​

Direction of Patient Support Rotation when viewing table from above, for​

Direction​

 

segment following Control Point. See Section C.8.8.14.8.​

 

 

 

Enumerated Values:​

 

 

 

CW​ clockwise​

 

 

 

CC​

counter-clockwise​

 

 

 

NONE​no rotation​

 

>>Table Top Vertical Position​

(300A,0128)​

Table Top Vertical position in mm in the IEC TABLE TOP coordinate​

 

 

system. See Section C.8.8.14.6.​

 

>>Table Top Longitudinal Position​

(300A,0129)​

Table Top Longitudinal position in mm in the IEC TABLE TOP coordinate​

 

 

system. See Section C.8.8.14.6.​

 

>>Table Top Lateral Position​

(300A,012A)​ Table Top Lateral position in mm in the IEC TABLE TOP coordinate​

 

 

system. See Section C.8.8.14.6.​

 

>>Table Top Pitch Angle​

(300A,0140)​

TableTopPitchAngleindegrees,i.e.,therotationoftheIECTABLETOP​

 

 

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

 

 

system. See Section C.8.8.25.6.2.​

 

- Standard -​

Page 1544​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

 

Description​

>>Table Top Pitch Rotation​

(300A,0142)​

Direction of Table Top Pitch Rotation when viewing the table along the​

Direction​

 

positive X-axis of the IEC TABLE TOP coordinate system, for segment​

 

 

followingControlPoint.SeeSectionC.8.8.14.8andSectionC.8.8.25.6.2.​

 

 

Enumerated Values:​

 

 

CW​ clockwise​

 

 

CC​

counter-clockwise​

 

 

NONE​no rotation​

>>Table Top Roll Angle​

(300A,0144)​

Table Top Roll Angle in degrees, i.e., the rotation of the IEC TABLE TOP​

 

 

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

 

 

system. See Section C.8.8.25.6.2.​

>>Table Top Roll Rotation​

(300A,0146)​

Direction of Table Top Roll Rotation when viewing the table along the​

Direction​

 

positive Y-axis of the IEC TABLE TOP coordinate system, for segment​

 

 

followingControlPoint.SeeSectionC.8.8.14.8andSectionC.8.8.25.6.2.​

 

 

Enumerated Values:​

 

 

CW​ clockwise​

 

 

CC​

counter-clockwise​

 

 

NONE​no rotation​

>>Head Fixation Angle​

(300A,0148)​

Angle in degrees of the head fixation for eye treatments with respect to​

 

 

theTableTopPitchAngle(300A,0140)coordinatesystem.Positivehead​

 

 

fixation angle is the same direction as positive Table Top Pitch. See​

 

 

Section C.8.8.25.6.4.​

>>Gantry Pitch Angle​

(300A,014A)​ Gantry Pitch Angle in degrees of the radiation source, i.e., the rotation of​

 

 

theIECGANTRYcoordinatesystemabouttheX-axisoftheIECGANTRY​

 

 

coordinate system. See Section C.8.8.25.6.5.​

>>Gantry Pitch Rotation Direction​

(300A,014C)​

Direction of Gantry Pitch Angle when viewing along the positive X-axis​

 

 

of the IEC GANTRY coordinate system, for segment following Control​

 

 

Point. See Section C.8.8.14.8 and Section C.8.8.25.6.5.​

 

 

Enumerated Values:​

 

 

CW​ clockwise​

 

 

CC​

counter-clockwise​

 

 

NONE​no rotation​

>>Snout Position​

(300A,030D)​

Axial position in mm of the snout, measured from isocenter to the​

 

 

downstream side of the snout (without consideration of variable length​

 

 

elements such as blocks, MLC and/or compensators).​

>>Range Shifter Settings​

(300A,0360)​

Range Shifter settings for the current control point.​

Sequence​

 

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

 

 

>>>Range Shifter Setting​

(300A,0362)​

Machine specific setting Attribute for the range shifter. See​

 

 

Section C.8.8.25.5.​

>>>Referenced Range Shifter​

(300C,0100)​ Uniquely references Range Shifter described by Range Shifter Number​

Number​

 

(300A,0316) in Range Shifter Sequence (300A,0314).​

>>Lateral Spreading Device​

(300A,0370)​

Lateral Spreading Device settings for the current control point.​

Settings Sequence​

 

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

 

 

>>>Lateral Spreading Device​

(300A,0372)​

Machine specific setting Attribute for the lateral spreading device. See​

Setting​

 

Section C.8.8.25.5.​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 1545​

Attribute Name​

Tag​

Description​

 

>>>Referenced Lateral Spreading​

(300C,0102)​

Uniquely references Lateral Spreading Device described by Lateral​

Device Number​

 

Spreading Device Number (300A,0334) in Lateral Spreading Device​

 

 

Sequence (300A,0332).​

 

>>Range Modulator Settings​

(300A,0380)​

Range Modulator Settings for current control point.​

 

Sequence​

 

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

 

 

 

 

>>>Range Modulator Gating Start​

(300A,0382)​

Start position, defining the range modulator position at which the beam​

Value​

 

is switched on.​

 

>>>Range Modulator Gating Stop​

(300A,0384)​

Stop position, defining the range modulator position at which the beam​

Value​

 

is switched off.​

 

>>>Referenced Range Modulator​

(300C,0104)​

Uniquely references Range Modulator described by Range Modulator​

Number​

 

Number (300A,0344) in Range Modulator Sequence (300A,0342).​

>>Ion Wedge Position Sequence​

(300A,03AC)​

Wedge positions for current control point.​

 

 

 

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

 

>>>Wedge Thin Edge Position​

(300A,00DB)​

Closest distance in mm from the central axis of the beam along a wedge​

 

 

axis to the thin edge as projected to the machine isocentric plane. Value​

 

 

ispositiveisthewedgedoesnotcoverthecentralaxis,negativeifitdoes.​

 

 

See Section C.8.8.25.6.4.​

 

>>>Wedge Position​

(300A,0118)​

Position of Wedge at current Control Point.​

 

 

 

Enumerated Values:​

 

 

 

IN​

 

 

 

OUT​

 

>>Referenced Control Point Index​

(300C,00F0)​

Uniquely identifies Control Point specified by Control Point Index​

 

 

(300A,0112 within the Beam referenced by Referenced Beam Number​

 

 

(300C,0006).​

 

>Recorded Snout Sequence​

(3008,00F0)​

Snouts associated with Beam.​

 

 

 

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

 

>>Accessory Code​

(300A,00F9)​

An accessory identifier to be read by a device such as a bar code reader.​

>>Snout ID​

(300A,030F)​

User or machine supplied identifier for Snout.​

 

>Recorded Range Shifter​

(3008,00F2)​

Range shifters recorded with Beam.​

 

Sequence​

 

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

 

 

 

 

>>Accessory Code​

(300A,00F9)​

An accessory identifier to be read by a device such as a bar code reader.​

>>Range Shifter ID​

(300A,0318)​

User or machine supplied identifier for Range Modulator.​

 

>>Referenced Range Shifter​

(300C,0100)​

Uniquely identifies range shifter specified by Range Shifter Number​

Number​

 

(300A,0316) within Beam referenced by Referenced Beam Number​

 

 

(300C,0006).​

 

>Recorded Lateral Spreading​

(3008,00F4)​

Lateral spreading devices associated with Beam.​

 

Device Sequence​

 

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

 

 

 

 

>>Accessory Code​

(300A,00F9)​

An accessory identifier to be read by a device such as a bar code reader.​

>>Lateral Spreading Device ID​

(300A,0336)​

User or machine supplied identifier for Lateral Spreading Device.​

>>Referenced Lateral Spreading​

(300C,0102)​

UniquelyidentifieslateralspreadingdevicespecifiedbyLateralSpreading​

Device Number​

 

Device Number (300A,0334) within Beam referenced by Referenced​

 

 

Beam Number (300C,0006).​

 

- Standard -​

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