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RT Treatment Machine RecordMModule - Treatment Record
Measured Dose Reference RecordUModule - Treatment Record
Calculated Dose Reference RecordUModule - Treatment Record
RT Ion Beams Session RecordMModule - Treatment Record
(3008,0021) Treatment Session Ion Beam Sequence1Sequence
(3008,0022) Current Fraction Number2Integer String
(3008,002A) Treatment Termination Status1Code String
(3008,002C) Treatment Verification Status2Code String
(3008,0032) Specified Primary Meterset3Decimal String
(3008,0033) Specified Secondary Meterset3Decimal String
(3008,0036) Delivered Primary Meterset3Decimal String
(3008,0037) Delivered Secondary Meterset3Decimal String
(3008,003A) Specified Treatment Time3Decimal String
(3008,003B) Delivered Treatment Time3Decimal String
(3008,0041) Ion Control Point Delivery Sequence1Sequence
(3008,0080) Referenced Measured Dose Reference Sequence3Sequence
(3008,0090) Referenced Calculated Dose Reference Sequence3Sequence
(3008,00A0) Beam Limiting Device Leaf Pairs Sequence3Sequence
(3008,00A1) Enhanced RT Beam Limiting Device Sequence1CSequence
(0008,0070) Manufacturer2Long String
(0008,1090) Manufacturer's Model Name2Long String
(0018,1000) Device Serial Number2Long String
(0018,100A) UDI Sequence3Sequence
(0018,1020) Software Versions2Long String
(0018,1204) Date of Manufacture3Date
(0018,1205) Date of Installation3Date
(0050,0021) Long Device Description3Short Text
(300A,0602) Referenced Defined Device Index1CUnsigned Short
(300A,060E) Referenced RT Accessory Holder Device Index2CUnsigned Short
(300A,0611) RT Accessory Holder Slot ID2CLong String
(300A,0613) RT Accessory Slot Distance2CDouble
(300A,0615) RT Accessory Device Slot ID2CLong String
(300A,0642) RT Beam Limiting Device Proximal Distance2Double
(300A,0643) RT Beam Limiting Device Distal Distance2Double
(300A,0645) Beam Modifier Orientation Angle1Double
(300A,0646) Fixed RT Beam Delimiter Device Sequence1CSequence
(300A,0647) Parallel RT Beam Delimiter Device Sequence1CSequence
(3010,001A) Manufacturer's Model Version2Long String
(3010,001B) Device Alternate Identifier2Unlimited Characters
(3010,001C) Device Alternate Identifier Type1CCode String
(3010,001D) Device Alternate Identifier Format1CLong Text
(3010,002D) Device Label1Long String
(3010,002E) Device Type Code Sequence1Sequence
(3010,0039) Device Index1Unsigned Short
(3010,0043) Manufacturer's Device Identifier2Short Text
(3008,00A3) Enhanced RT Beam Limiting Device Definition Flag3Code String
(3008,00B0) Recorded Wedge Sequence1CSequence
(3008,00C0) Recorded Compensator Sequence1CSequence
(3008,00D0) Recorded Block Sequence1CSequence
(3008,00F0) Recorded Snout Sequence1CSequence
(3008,00F2) Recorded Range Shifter Sequence1CSequence
(3008,00F4) Recorded Lateral Spreading Device Sequence1CSequence
(3008,00F6) Recorded Range Modulator Sequence1CSequence
(300A,00C2) Beam Name1Long String
(300A,00C3) Beam Description3Short Text
(300A,00C4) Beam Type1Code String
(300A,00C6) Radiation Type1Code String
(300A,00CE) Treatment Delivery Type2Code String
(300A,00D0) Number of Wedges1Integer String
(300A,00E0) Number of Compensators1Integer String
(300A,00ED) Number of Boli1Integer String
(300A,00F0) Number of Blocks1Integer String
(300A,0107) Applicator Sequence1CSequence
(300A,0110) Number of Control Points1Integer String
(300A,0150) Fixation Eye3Code String
(300A,0302) Radiation Mass Number1CInteger String
(300A,0304) Radiation Atomic Number1CInteger String
(300A,0306) Radiation Charge State1CSigned Short
(300A,0308) Scan Mode1Code String
(300A,0309) Modulated Scan Mode Type1CCode String
(300A,0312) Number of Range Shifters1Integer String
(300A,0330) Number of Lateral Spreading Devices1Integer String
(300A,0340) Number of Range Modulators1Integer String
(300A,0350) Patient Support Type1Code String
(300A,0352) Patient Support ID3Short String
(300A,0354) Patient Support Accessory Code3Long String
(300A,0356) Fixation Light Azimuthal Angle3Single
(300A,0358) Fixation Light Polar Angle3Single
(300A,0420) General Accessory Sequence3Sequence
(300A,0506) Delivered Depth Dose Parameters Sequence3Sequence
(300A,0715) RT Treatment Termination Reason Code Sequence3Sequence
(300A,0716) Machine-Specific Treatment Termination Code Sequence3Sequence
(300A,0730) Treatment Termination Description3Short Text
(300A,0740) Interlock Sequence3Sequence
(300C,0006) Referenced Beam Number1Integer String
(300C,0040) Referenced Verification Image Sequence3Sequence
(300C,006A) Referenced Patient Setup Number3Integer String
(300C,00A0) Referenced Tolerance Table Number3Integer String
(300C,00B0) Referenced Bolus Sequence1CSequence
(3010,0038) Entity Long Label3Long String
(300A,0078) Number of Fractions Planned2Integer String
(300A,00B3) Primary Dosimeter Unit1Code String
(300C,0022) Referenced Fraction Group Number3Integer String
RT Treatment Summary RecordUModule - Treatment Record
General ReferenceUModule - Treatment Record
SOP CommonMModule - Treatment Record
Common Instance ReferenceUModule - Treatment Record
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Visual Acuity MeasurementsCIOD
Ophthalmic Axial MeasurementsCIOD
Intraocular Lens CalculationsCIOD
Generic Implant TemplateCIOD
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RT Beams Delivery InstructionCIOD
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Built with by Innolitics, a team of medical imaging software developers.

Data synced with official DICOM standard on 18 April 2024. The DICOM Standard is under continuous maintenance, and the current official version is available at http://www.dicomstandard.org/current/. DICOM Parts 3, 4, and 6, © NEMA. Please note that the most recent PDF version of the standard is the official reference, and should checked when making technical decisions.

Beam Modifier Orientation Angle Attribute

Tag(300A,0645)
TypeRequired (1)
KeywordBeamModifierOrientationAngle
Value Multiplicity1
Value RepresentationDouble (FD)

Angle in degrees of the Beam Modifier Coordinate System with respect to the Base Beam Modifier Coordinate System. The angle is a Continuous Rotation Angle, see Section C.36.1.1.5.

If Device Type Code Sequence (3010,002E) contains either (130331, DCM, "Leaf Pairs"), or (130333, DCM, "Single Leaves") the motion of the RT Beam Delimiters is along the x-axis of the Beam Modifier Definition Plane.

See Section C.36.1.1.9.

Section C.36.1.1.5

C.36.1.1.5 Continuous Rotation Angle

A Continuous Rotation Angle is an angle in the range (-∞,+∞).

Continuous Rotation Angle represent a rotation direction and magnitude. The magnitude is not limited to be between 0 and 360 degrees.

All rotations are defined in a right-handed coordinate system, thus the direction of a positive rotation is seen as clockwise when viewed in the positive direction of the axis of rotation.

Section C.36.1.1.9

C.36.1.1.9 Beam Modifier Coordinate System

Beam modifiers, e.g., beam limiting devices, compensators and blocks, are specified by geometric coordinates.

A Base Beam Modifier Coordinate System is defined with respect to a parent coordinate system, which may be the Equipment Coordinate System (see Section 10.39.1.1) or another coordinate system derived from the Equipment Coordinate System. Section C.36.12.2 specifies several Well-known Frames of Reference used as the Equipment Frame of Reference, and specifies how a Base Beam Modifier Coordinate System is related to each as a child coordinate system.

The x/y plane of the Base Beam Modifier Coordinate System is referred to as the Base Beam Modifier Definition Plane. The orientation of the Base Beam Modifier Coordinate System is such that the Base Beam Modifier Definition Plane is parallel to the x/y plane of the parent coordinate system. The origin of the Base Beam Modifier Coordinate System is offset from the RT Device Distance Reference Location by the RT Beam Modifier Definition Distance (300A,0688) as shown in Figure C.36.1-1.

Figure C.36.1-1. Base Beam Modifier Coordinate System and a rotated Beam Modifier Coordinate System


Each beam modifier is defined in its own Beam Modifier Coordinate System with the following characteristics:

  • Defined with respect to the Base Beam Modifier Coordinate System.

  • Right-handed Cartesian coordinate system, with the positive z-axis pointing towards the nominal Radiation Source location.

  • The Beam Modifier Coordinate System rotates about the z-axis of the Base Beam Modifier Coordinate System. The orientation at a zero angle about the z-axis is the same as the Base Beam Modifier Coordinate System, i.e., the x- and y-axes are aligned.

The x/y plane of the Beam Modifier Coordinate System is referred to as the Beam Modifier Definition Plane.