Computed Radiography ImageCIOD
CT ImageCIOD
MR ImageCIOD
Nuclear Medicine ImageCIOD
Ultrasound ImageCIOD
Ultrasound Multi-frame ImageCIOD
Secondary Capture ImageCIOD
Multi-frame Single Bit Secondary Capture ImageCIOD
Multi-frame Grayscale Byte Secondary Capture ImageCIOD
Multi-frame Grayscale Word Secondary Capture ImageCIOD
Multi-frame True Color Secondary Capture ImageCIOD
X-Ray Angiographic ImageCIOD
X-Ray Radiofluoroscopic ImageCIOD
RT ImageCIOD
RT DoseCIOD
RT Structure SetCIOD
RT PlanCIOD
Positron Emission Tomography ImageCIOD
Digital X-Ray ImageCIOD
Digital Mammography X-Ray ImageCIOD
Digital Intra-Oral X-Ray ImageCIOD
RT Beams Treatment RecordCIOD
RT Brachy Treatment RecordCIOD
RT Treatment Summary RecordCIOD
VL Endoscopic ImageCIOD
VL Microscopic ImageCIOD
VL Slide-Coordinates Microscopic ImageCIOD
VL Photographic ImageCIOD
Video Endoscopic ImageCIOD
Video Microscopic ImageCIOD
Video Photographic ImageCIOD
VL Whole Slide Microscopy ImageCIOD
Real-Time Video Endoscopic ImageCIOD
Real-Time Video Photographic ImageCIOD
Dermoscopic Photography ImageCIOD
Grayscale Softcopy Presentation StateCIOD
Color Softcopy Presentation StateCIOD
Pseudo-Color Softcopy Presentation StateCIOD
Blending Softcopy Presentation StateCIOD
Basic Structured DisplayCIOD
XA/XRF Grayscale Softcopy Presentation StateCIOD
Advanced Blending Presentation StateCIOD
Variable Modality LUT Softcopy Presentation StateCIOD
Basic Voice Audio WaveformCIOD
12-Lead ECGCIOD
General ECGCIOD
Ambulatory ECGCIOD
Hemodynamic WaveformCIOD
Basic Cardiac Electrophysiology WaveformCIOD
Arterial Pulse WaveformCIOD
Respiratory WaveformCIOD
General Audio WaveformCIOD
Real-Time Audio WaveformCIOD
Routine Scalp ElectroencephalogramCIOD
ElectromyogramCIOD
ElectrooculogramCIOD
Sleep ElectroencephalogramCIOD
Multi-channel Respiratory WaveformCIOD
Body Position WaveformCIOD
General 32-bit ECGCIOD
Basic Text SRCIOD
Enhanced SRCIOD
Comprehensive SRCIOD
Key Object Selection DocumentCIOD
Mammography CAD SRCIOD
Chest CAD SRCIOD
Procedure LogCIOD
X-Ray Radiation Dose SRCIOD
Spectacle Prescription ReportCIOD
Colon CAD SRCIOD
Macular Grid Thickness and Volume ReportCIOD
Implantation Plan SR DocumentCIOD
Comprehensive 3D SRCIOD
Radiopharmaceutical Radiation Dose SRCIOD
Extensible SRCIOD
Acquisition Context SRCIOD
Simplified Adult Echo SRCIOD
Patient Radiation Dose SRCIOD
Planned Imaging Agent Administration SRCIOD
Performed Imaging Agent Administration SRCIOD
Rendition Selection DocumentCIOD
Enhanced X-Ray Radiation Dose SRCIOD
Enhanced MR ImageCIOD
MR SpectroscopyCIOD
Enhanced MR Color ImageCIOD
Raw DataCIOD
Enhanced CT ImageCIOD
Spatial RegistrationCIOD
Deformable Spatial RegistrationCIOD
Spatial FiducialsCIOD
Ophthalmic Photography 8 Bit ImageCIOD
Ophthalmic Photography 16 Bit ImageCIOD
Stereometric RelationshipCIOD
Hanging ProtocolCIOD
Encapsulated PDFCIOD
Encapsulated CDACIOD
Real World Value MappingCIOD
Enhanced XA ImageCIOD
Enhanced XRF ImageCIOD
RT Ion PlanCIOD
RT Ion Beams Treatment RecordCIOD
SegmentationCIOD
Ophthalmic Tomography ImageCIOD
X-Ray 3D Angiographic ImageCIOD
X-Ray 3D Craniofacial ImageCIOD
Breast Tomosynthesis ImageCIOD
Enhanced PET ImageCIOD
Surface SegmentationCIOD
Color PaletteCIOD
Enhanced US VolumeCIOD
Lensometry MeasurementsCIOD
Autorefraction MeasurementsCIOD
Keratometry MeasurementsCIOD
Subjective Refraction MeasurementsCIOD
Visual Acuity MeasurementsCIOD
Ophthalmic Axial MeasurementsCIOD
Intraocular Lens CalculationsCIOD
Generic Implant TemplateCIOD
Implant Assembly TemplateCIOD
Implant Template GroupCIOD
RT Beams Delivery InstructionCIOD
Ophthalmic Visual Field Static Perimetry MeasurementsCIOD
Intravascular Optical Coherence Tomography ImageCIOD
Ophthalmic Thickness MapCIOD
Surface Scan MeshCIOD
Surface Scan Point CloudCIOD
Legacy Converted Enhanced CT ImageCIOD
Legacy Converted Enhanced MR ImageCIOD
Legacy Converted Enhanced PET ImageCIOD
Corneal Topography MapCIOD
Breast Projection X-Ray ImageCIOD
Parametric MapCIOD
Wide Field Ophthalmic Photography Stereographic Projection ImageCIOD
Wide Field Ophthalmic Photography 3D Coordinates ImageCIOD
Tractography ResultsCIOD
RT Brachy Application Setup Delivery InstructionCIOD
Planar MPR Volumetric Presentation StateCIOD
Volume Rendering Volumetric Presentation StateCIOD
Content Assessment ResultsCIOD
CT Performed Procedure ProtocolCIOD
CT Defined Procedure ProtocolCIOD
Protocol ApprovalCIOD
XA Performed Procedure ProtocolCIOD
XA Defined Procedure ProtocolCIOD
Ophthalmic Optical Coherence Tomography En Face ImageCIOD
Ophthalmic Optical Coherence Tomography B-scan Volume AnalysisCIOD
Encapsulated STLCIOD
Encapsulated OBJCIOD
Encapsulated MTLCIOD
RT Physician IntentCIOD
RT Segment AnnotationCIOD
RT Radiation SetCIOD
C-Arm Photon-Electron RadiationCIOD
Tomotherapeutic RadiationCIOD
Robotic-Arm RadiationCIOD
PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
Patient StudyUModule - Study
Clinical Trial StudyUModule - Study
General SeriesMModule - Series
Clinical Trial SeriesUModule - Series
Enhanced RT SeriesMModule - Series
General EquipmentMModule - Equipment
Enhanced General EquipmentMModule - Equipment
Frame of ReferenceMModule - Frame of Reference
General ReferenceMModule - RT Radiation
RT Delivery Device CommonMModule - RT Radiation
RT Radiation CommonMModule - RT Radiation
Robotic-Arm Delivery DeviceMModule - RT Radiation
Robotic-Arm PathMModule - RT Radiation
(300A,0604) Number of RT Control Points1Unsigned Short
(3010,0091) Robotic Path Node Set Code Sequence1CSequence
(3010,0097) Robotic Path Control Point Sequence1Sequence
(300A,0600) RT Control Point Index1Unsigned Short
(300A,0605) Referenced Radiation Generation Mode Index1CUnsigned Short
(300A,060B) Referenced Treatment Position Index1CUnsigned Short
(300A,063C) Cumulative Meterset1CDouble
(300A,063D) Delivery Rate2CDouble
(300A,063E) Delivery Rate Unit Sequence1CSequence
(300A,0656) RT Beam Limiting Device Opening Sequence1CSequence
(300A,0657) Number of RT Beam Limiting Device Openings1CUnsigned Short
(300A,0689) Beam Area Limit Sequence1CSequence
(300A,073A) Recorded RT Control Point DateTime1CDate Time
(300A,073B) Referenced Radiation RT Control Point Index2CUnsigned Short
(3010,0092) Robotic Node Identifier1CUnsigned Long
(3010,0093) RT Treatment Source Coordinates1CDouble
(3010,0094) Radiation Source Coordinate SystemYaw Angle1CDouble
(3010,0095) Radiation Source Coordinate SystemRoll Angle1CDouble
(3010,0096) Radiation Source Coordinate System Pitch Angle1CDouble
SOP CommonMModule - RT Radiation
Common Instance ReferenceMModule - RT Radiation
Radiotherapy Common InstanceMModule - RT Radiation
RT Radiation Record SetCIOD
RT Radiation Salvage RecordCIOD
C-Arm Photon-Electron Radiation RecordCIOD
Tomotherapeutic Radiation RecordCIOD
Robotic-Arm Radiation RecordCIOD
RT Radiation Set Delivery InstructionCIOD
RT Treatment PreparationCIOD
Enhanced RT ImageCIOD
Enhanced Continuous RT ImageCIOD
RT Patient Position Acquisition InstructionCIOD
Microscopy Bulk Simple AnnotationsCIOD
InventoryCIOD
Photoacoustic ImageCIOD
Confocal Microscopy ImageCIOD
Confocal Microscopy Tiled Pyramidal ImageCIOD
Basic DirectoryCIOD

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.

Delivery Rate Attribute

Tag(300A,063D)
TypeConditionally Required, Empty if Unknown (2C)
KeywordDeliveryRate
Value Multiplicity1
Value RepresentationDouble (FD)

The value of the intended nominal rate of delivery of the specified Cumulative Meterset (300A,063C).

The units are defined in the Delivery Rate Unit Sequence (300A,063E).

Required if the conditions in Section C.36.2.2.5.1.1 are satisfied.

See Section C.36.2.2.5.1.

Section C.36.2.2.5.1.1

C.36.2.2.5.1.1 Requirements for Changing Values within RT Control Point Sequence Attributes

This Section specifies when individual Attributes shall be present in a Sequence.

The RT Control Point Sequence specifies a certain order of execution.

At each RT Control Point the value of various Attributes may be specified as an explicit value (which in the case of a type 2C Attribute may be a null value) and if absent remain at the same value as specified previously. There are physical and mechanical implications of specifying a new value as opposed to staying at the same value, for example gear lash, floating point jitter, etc.

At the first Sequence Item in RT Control Point Sequences (i.e., with an RT Control Point Index (300A,0600) equal to 1) all Attributes affected by this Section shall be present if applicable conditions are met.

For Sequence Items other than the first Sequence Item, Attributes shall be present if applicable conditions are met and the value is different from the previously populated value for the same Attribute (in the case of a type 2C Attribute, a null value is considered as a value). The previously populated value is the value from the Item where the Attribute was present with the greatest value of RT Control Point Index (300A,0600) less than the value of the RT Control Point Index (300A,0600) in the current Item.

This means that for an Item in which an Attribute is absent, the application stays at the value of the previously populated Item.

For Sequences inside a RT Control Point Sequence Item, the Sequence shall be present if any of the nested Attributes affected by this Section differ from the corresponding previously populated Item.

For multi-valued Attributes, such as Parallel RT Beam Delimiter Positions (300A,064A), all values shall be present if any value changes.

Section C.36.2.2.5.1

C.36.2.2.5.1 RT Control Point Attribute Concept

The treatment-modality Modules use a common formalism to represent parameters that define the behavior of a delivery device during delivery of radiation. These parameters are communicated as a sequence of values, organized as Control Points (see Section C.36.1.1.1) and represented as RT Control Points. The resolution of RT Control Points depends on the level of detail required to define the behavior of the delivery device.

A Control Point is a point on a time line of a delivery process. RT Control Points are sequenced using an index number starting with 1, e.g., 1, 2, 3, 4. The RT Control Point parameters reflect the state of the delivery device at that point in time. The Control Point Cumulative Meterset reflects the dose that has been delivered from the beginning of the delivery process up to that point in time.

For all beam deliveries there are at least two RT Control Points, corresponding to the start and end of delivery. E.g., for a simple Static Beam delivery with a constant field aperture, only two RT Control Points are needed to define the start and end, as there are no changes in-between. For a dynamic delivery, in which the MLC leaves are changing while radiation is delivered, the number of Control Points will be higher to provide enough detail to define the leaf movement with sufficient resolution to achieve the radiation fluence distribution expected for the prescribed dose.

DICOM does not specify the behavior of the machine parameters between Control Points. The planning system needs to know the hardware-specific characteristics of the delivery system for which the plan is being created.

C.36.2.2.5.1.1 Requirements for Changing Values within RT Control Point Sequence Attributes

This Section specifies when individual Attributes shall be present in a Sequence.

The RT Control Point Sequence specifies a certain order of execution.

At each RT Control Point the value of various Attributes may be specified as an explicit value (which in the case of a type 2C Attribute may be a null value) and if absent remain at the same value as specified previously. There are physical and mechanical implications of specifying a new value as opposed to staying at the same value, for example gear lash, floating point jitter, etc.

At the first Sequence Item in RT Control Point Sequences (i.e., with an RT Control Point Index (300A,0600) equal to 1) all Attributes affected by this Section shall be present if applicable conditions are met.

For Sequence Items other than the first Sequence Item, Attributes shall be present if applicable conditions are met and the value is different from the previously populated value for the same Attribute (in the case of a type 2C Attribute, a null value is considered as a value). The previously populated value is the value from the Item where the Attribute was present with the greatest value of RT Control Point Index (300A,0600) less than the value of the RT Control Point Index (300A,0600) in the current Item.

This means that for an Item in which an Attribute is absent, the application stays at the value of the previously populated Item.

For Sequences inside a RT Control Point Sequence Item, the Sequence shall be present if any of the nested Attributes affected by this Section differ from the corresponding previously populated Item.

For multi-valued Attributes, such as Parallel RT Beam Delimiter Positions (300A,064A), all values shall be present if any value changes.

C.36.2.2.5.1.2 Control Point Attribute Example

The following examples illustrate RT Control Points:

  1. Static Beam delivery:

    RT Control Point Index (300A,0600)

    Cumulative Meterset (300A,063C)

    All other parameters

    1

    0

    <defined>

    2

    76

    <not present>

    At completion this beam delivers 76 Monitor Units using a fixed static set of treatment parameters defined in RT Control Point 1.

  2. Arc delivery:

    RT Control Point Index (300A,0600)

    Cumulative Meterset (300A,063C)

    Source Roll Angle (300A,067A)

    All other parameters

    1

    0

    <initial angle>

    <defined>

    2

    56

    <final angle>

    <not present>

    At completion this delivers 56 Monitor Units while rotating the gantry from initial angle to final angle.

  3. Dynamic delivery of three segments, including a Source Roll Angle change during the second segment:

    RT Control Point Index (300A,0600)

    Cumulative Meterset (300A,063C)

    Source Roll Angle (300A,067A)

    Number of RT Beam Limiting Device Openings (300A,0657)

    Parallel RT Beam Delimiter Positions (300A,064A)

    X

    Referenced Device Index 1

    Parallel RT Beam Delimiter Positions(300A,064A)

    Y

    Referenced Device Index 2

    RT Beam Limiting Device Angle (300A,0679)

    All other parameters

    1

    0

    0

    2

    2\2

    2\2

    30

    <defined>

    2

    40

    <not present>

    1

    <not present>

    4\4

    <not present>

    <not present>

    3

    45

    7

    0

    <not present>

    <not present>

    <not present>

    <not present>

    4

    80

    <not present>

    1

    4\4

    <not present>

    <not present>

    <not present>

    At completion this delivers 80 Monitor Units while first increasing the Y opening and then increasing the X opening, while the beam limiting device angle stays fixed. For the RT Beam Limiting Device Opening Sequence (300A,0656) this results in having three Items for the first Control Point and only one for Control Points 2 (Referenced Device Index 2 only) and 3 (Referenced Device Index 1 only). Control Point 3 demonstrates the case where no changes occur in the RT Beam Limiting Device Openings Sequence, requiring the Number of RT Beam Limiting Device Openings to be present with a 0 value. See also Figure C.36.2.2.5.1-1.

    Figure C.36.2.2.5.1-1. Control Points Sub-Sequence Attribute Presence


  4. Dynamic Delivery of two unequally weighted segments with a step change of 5 degrees in the positive direction of the Patient Support Angle:

    Note

    Patient Support Angle is represented by the Image to Equipment Mapping Matrix (0028,9520). The table contains the effective angle and not the complete matrix.

    RT Control Point Index (300A,0600)

    Cumulative Meterset (300A,063C)

    Image to Equipment Mapping Matrix (0028,9520)

    Source Roll Angle (300A,067A)

    All other parameters

    1

    0

    0

    -90

    <defined>

    2

    30

    <not present>

    <not present>

    <not present>

    3

    <not present>

    5

    0

    <not present>

    4

    90

    <not present>

    <not present>

    <not present>

    At completion this delivers 90 Monitor Units. Between RT Control Point 2 and 3 the Patient Support Angle and Source Roll Continuous Angle are changed and no radiation is delivered.

C.36.2.2.5.1.3 Cumulative Meterset

The Meterset at a given Control Point is specified by Cumulative Meterset (300A,063C). This value is specified in units defined by Radiation Dosimeter Unit Sequence (300A,0658) in the Section C.36.12 RT Delivery Device Common Module. The Meterset values are intended to correspond to the values produced by the primary or the single Meterset-measuring device of a RT Radiation Delivery Device.