DICOM PS3.3 2024d - Information Object Definitions |
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The RT Beams Delivery Instruction Module contains additional information required by a Treatment Delivery System (TDS) when specifying delivery of an external beam radiotherapy treatment. This information is supplied by a Treatment Management System (TMS) when it creates an RT Beams Delivery Instruction SOP Instance, a composite SOP Instance in turn referenced by a Unified Procedure Step (UPS) in the Unified Procedure Step model.
The RT Beams Delivery Instruction Module consists of a sequence of one or more beam tasks, where each beam task may also specify one or more Delivery Verification images to be acquired prior to, during, or after the treatment delivery.
Table C.8.8.29-1. RT Beams Delivery Instruction Module Attributes
Reference to a single RT Plan or RT Ion Plan SOP Instance (whose UID is also supplied in the Input Information Sequence - see PS3.4) containing all the Beams and the Fraction Group referenced in this SOP Instance. |
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>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
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Specification of beams to be delivered and/or used for verification of the patient position. |
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Whether the beam is used to verify patient position, deliver treatment, or both. |
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Measurement unit of machine dosimeter. This value shall be the same as in the referenced RT Plan. It applies only to the Continuation Start Meterset (0074,0120) and Continuation End Meterset (0074,0121). Required if Treatment Delivery Type (300A,00CE) is CONTINUATION. |
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Meterset within Beam referenced by Referenced Beam Number (300C,0006) at which treatment delivery starts, in units specified by Primary Dosimeter Unit (300A,00B3). Required if Treatment Delivery Type (300A,00CE) is CONTINUATION. |
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Meterset within Beam referenced by Referenced Beam Number (300C,0006) at which treatment delivery ends, in units specified by Primary Dosimeter Unit (300A,00B3). Required if Treatment Delivery Type (300A,00CE) is CONTINUATION. |
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The index of the fraction that is to be delivered or completed in this session. See Section C.8.8.29.1. |
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Indicates which fraction group of the referenced plan is to be treated in the treatment session. Only one Fraction Group shall be specified per Delivery Instruction SOP Instance. Required if the referenced plan has more than one Fraction Group Sequence (300A,0070) Item. |
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Uniquely identifies the Beam that is specified by Beam Number (300A,00C0) within Beam Sequence (300A,00B0) in RT Beams Module of referenced RT Plan or within Ion Beam Sequence (300A,03A2) in RT Ion Beams Module of the referenced RT Ion Plan. |
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Identifies required ordering of beam delivery, monotonically increasing by 1, starting from 1. See Section C.8.8.29.5. |
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Enumerated Values: See Section C.8.8.29.6. |
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Identifies the positional alignment of the Table Top for which the values of Table Top Vertical Adjusted Position (0074,1026), Table Top Longitudinal Adjusted Position (0074,1027) and Table Top Lateral Adjusted Position (0074,1028) are applicable. See Section C.8.8.14.20. |
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Adjusted Table Top Vertical position in the IEC TABLE TOP coordinate system in mm for patient setup. See Section C.8.8.29.2. |
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Adjusted Table Top Longitudinal position in the IEC TABLE TOP coordinate system in mm for patient setup. See Section C.8.8.29.2. |
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Adjusted Table Top Lateral position in the IEC TABLE TOP coordinate system in mm for patient setup. See Section C.8.8.29.2. |
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Adjusted Patient Support angle for patient setup, i.e., orientation of the IEC PATIENT SUPPORT coordinate system with respect to the IEC FIXED REFERENCE coordinate system in degrees. See Section C.8.8.29.2. |
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Adjusted Table Top (non-isocentric) angle for patient setup, i.e., orientation of the IEC TABLE TOP ECCENTRIC coordinate system with respect to the IEC PATIENT SUPPORT system in degrees. See Section C.8.8.29.2. |
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Adjusted Table Top Pitch Angle for patient setup, i.e., the rotation of the IEC TABLE TOP coordinate system about the X-axis of the IEC TABLE TOP coordinate system in degrees. See Section C.8.8.29.2. |
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Adjusted Table Top Roll Angle for patient setup, i.e., the rotation of the IEC TABLE TOP coordinate system about the Y-axis of the IEC TABLE TOP coordinate system in degrees. See Section C.8.8.29.2. |
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Vertical Displacement in the IEC TABLE TOP coordinate system in mm relative to initial Setup Position, i.e., vertical offset between patient positioning performed using setup and treatment position. |
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Longitudinal Displacement in the IEC TABLE TOP coordinate system in mm relative to initial Setup Position, i.e., longitudinal offset between patient positioning performed using setup and treatment position. |
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Lateral Displacement in the IEC TABLE TOP coordinate system in mm relative to initial Setup Position, i.e., lateral offset between patient positioning performed using setup and treatment position. |
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>Include Table 10-28 “Device Motion Control Macro Attributes” |
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Patient position verification images to be acquired for current beam. Required if Beam Task Type (0074,1022) is VERIFY or VERIFY_AND_TREAT. Zero or one Item shall be included in this Sequence if Beam Task Type (0074,1022) is VERIFY. Zero or more Items shall be included in this Sequence if Beam Task Type (0074,1022) is VERIFY_AND_TREAT. |
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Indicates the temporal relationship of the verification image with respect to the current treatment beam delivery. Value shall be DURING_BEAM for Beams with a Beam Task Type (0074,1022) of VERIFY. |
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Cumulative Meterset Weight within current Beam at which image acquisition will start. Required if Verification Image Timing (0074,1032) is DURING_BEAM. |
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Treatment machine Meterset duration over which image is to be acquired, specified in Monitor units (MU) or minutes as defined by Primary Dosimeter Unit (300A,00B3) specified in the Referenced RT Plan Sequence (300C,0002). Required if Verification Image Timing (0074,1032) is BEFORE_BEAM or AFTER_BEAM. See Section C.8.8.29.3. |
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Cumulative Meterset Weight within current Beam at which image acquisition will end. Required if Verification Image Timing (0074,1032) is DURING_BEAM. |
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Indicates whether the current verification image is a single or double exposure. |
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Indicates the ordering of the open (double exposure) field with respect to the primary (collimated) field in a double exposure. |
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If this field is present, an additional exposure with the indicated Meterset is requested. |
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Offsets of field-defining edges in mm for the double exposure in the IEC BEAM LIMITING DEVICE coordinate system in the IEC order X1, X2, Y1, Y2. Negative values for X1 and Y1 indicate an enlarged field, negative values for X2 and Y2 indicate a reduced field. Required if Double Exposure Flag (0074,1034) is DOUBLE. See Section C.8.8.29.4. |
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Position in (x,y,z) coordinates in mm of origin of the IEC X-RAY IMAGE RECEPTOR System in the IEC GANTRY coordinate system. |
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Uniquely identifies Reference Images to which planned verification image is related. All Items in this Sequence shall be RT Image SOP Instances. |
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>>>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
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Beams not to be delivered and/or used for patient position verification. |
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Uniquely identifies the Beam that is specified by Beam Number (300A,00C0) within Beam Sequence (300A,00B0) in RT Beams Module of referenced RT Plan or within Ion Beam Sequence (300A,03A2) in RT Ion Beams Module of the referenced RT Ion Plan. |
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Reason why the referenced beam is not to be delivered and/or verified: |
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DICOM PS3.3 2024d - Information Object Definitions |
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