US Multi-frame ImageCIOD
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Multi-frame Single Bit SC ImageCIOD
Multi-frame Grayscale Byte SC ImageCIOD
Multi-frame Grayscale Word SC ImageCIOD
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Digital X-Ray ImageCIOD
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RT Beams Treatment RecordCIOD
RT Brachy Treatment RecordCIOD
RT Treatment Summary RecordCIOD
VL Endoscopic ImageCIOD
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Video Endoscopic ImageCIOD
Video Microscopic ImageCIOD
Video Photographic ImageCIOD
VL Whole Slide Microscopy ImageCIOD
Real-Time Video Endoscopic ImageCIOD
Real-Time Video Photographic 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
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Basic Voice Audio WaveformCIOD
Ambulatory ECGCIOD
Hemodynamic WaveformCIOD
Basic Cardiac Electrophysiology WaveformCIOD
Arterial Pulse WaveformCIOD
Respiratory WaveformCIOD
General Audio WaveformCIOD
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Basic Text SRCIOD
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Key Object Selection DocumentCIOD
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Procedure LogCIOD
X-Ray Radiation Dose SRCIOD
Spectacle Prescription ReportCIOD
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Implantation Plan SR DocumentCIOD
Comprehensive 3D SRCIOD
Radiopharmaceutical Radiation Dose SRCIOD
Extensible SRCIOD
Acquisition Context SRCIOD
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Stereometric RelationshipCIOD
Hanging ProtocolCIOD
Encapsulated PDFCIOD
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Real World Value MappingCIOD
Enhanced XA ImageCIOD
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PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
Patient StudyUModule - Study
Clinical Trial StudyUModule - Study
RT SeriesMModule - Series
Clinical Trial SeriesUModule - Series
Frame of ReferenceMModule - Frame of Reference
General EquipmentMModule - Equipment
RT General PlanMModule - Plan
RT PrescriptionUModule - Plan
RT Ion Tolerance TablesUModule - Plan
RT Patient SetupUModule - Plan
RT Fraction SchemeUModule - Plan
RT Ion BeamsCModule - Plan
(300A,03A2) Ion Beam Sequence1Sequence
(0008,0070) Manufacturer3Long String
(0008,0080) Institution Name3Long String
(0008,0081) Institution Address3Short Text
(0008,1040) Institutional Department Name3Long String
(0008,1041) Institutional Department Type Code Sequence3Sequence
(0008,1090) Manufacturer's Model Name3Long String
(0018,1000) Device Serial Number3Long String
(300A,00B2) Treatment Machine Name2Short String
(300A,00B3) Primary Dosimeter Unit1Code String
(300A,00C0) Beam Number1Integer String
(300A,00C2) Beam Name1Long String
(300A,00C3) Beam Description3Short Text
(300A,00C4) Beam Type1Code String
(300A,00C6) Radiation Type1Code String
(300A,00CE) Treatment Delivery Type1Code String
(300A,00D0) Number of Wedges1Integer String
(300A,00D7) Total Wedge Tray Water-Equivalent Thickness3Single
(300A,00E0) Number of Compensators1Integer String
(300A,00ED) Number of Boli1Integer String
(300A,00F0) Number of Blocks1Integer String
(300A,00F3) Total Block Tray Water-Equivalent Thickness3Single
(300A,0107) Applicator Sequence3Sequence
(300A,010E) Final Cumulative Meterset Weight1CDecimal String
(300A,0110) Number of Control Points1Integer String
(300A,0150) Fixation Eye3Code String
(300A,02E3) Total Compensator Tray Water-Equivalent Thickness3Single
(300A,02EA) Ion Range Compensator Sequence1CSequence
(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,030A) Virtual Source-Axis Distances1Single
(300A,030C) Snout Sequence3Sequence
(300A,0312) Number of Range Shifters1Integer String
(300A,0314) Range Shifter Sequence1CSequence
(300A,0330) Number of Lateral Spreading Devices1Integer String
(300A,0332) Lateral Spreading Device Sequence1CSequence
(300A,0340) Number of Range Modulators1Integer String
(300A,0342) Range Modulator Sequence1CSequence
(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,03A4) Ion Beam Limiting Device Sequence3Sequence
(300A,03A6) Ion Block Sequence1CSequence
(300A,03A8) Ion Control Point Sequence1Sequence
(0018,0060) KVP1CDecimal String
(300A,0112) Control Point Index1Integer String
(300A,0114) Nominal Beam Energy1CDecimal String
(300A,011A) Beam Limiting Device Position Sequence1CSequence
(300A,011E) Gantry Angle1CDecimal String
(300A,011F) Gantry Rotation Direction1CCode String
(300A,0120) Beam Limiting Device Angle1CDecimal String
(300A,0121) Beam Limiting Device Rotation Direction1CCode String
(300A,0122) Patient Support Angle1CDecimal String
(300A,0123) Patient Support Rotation Direction1CCode String
(300A,0128) Table Top Vertical Position2CDecimal String
(300A,0129) Table Top Longitudinal Position2CDecimal String
(300A,012A) Table Top Lateral Position2CDecimal String
(300A,012C) Isocenter Position2CDecimal String
(300A,012E) Surface Entry Point3Decimal String
(300A,0133) External Contour Entry Point3Single
(300A,0134) Cumulative Meterset Weight2Decimal String
(300A,0140) Table Top Pitch Angle2CSingle
(300A,0142) Table Top Pitch Rotation Direction2CCode String
(300A,0144) Table Top Roll Angle2CSingle
(300A,0146) Table Top Roll Rotation Direction2CCode String
(300A,0148) Head Fixation Angle3Single
(300A,014A) Gantry Pitch Angle2CSingle
(300A,014C) Gantry Pitch Rotation Direction2CCode String
(300A,0151) Chair Head Frame Position3Decimal String
(300A,030D) Snout Position2CSingle
(300A,035A) Meterset Rate3Single
(300A,0360) Range Shifter Settings Sequence1CSequence
(300A,0362) Range Shifter Setting1Long String
(300A,0364) Isocenter to Range Shifter Distance3Single
(300A,0366) Range Shifter Water Equivalent Thickness3Single
(300C,0100) Referenced Range Shifter Number1Integer String
(300A,0370) Lateral Spreading Device Settings Sequence1CSequence
(300A,0380) Range Modulator Settings Sequence1CSequence
(300A,0390) Scan Spot Tune ID1CShort String
(300A,0392) Number of Scan Spot Positions1CInteger String
(300A,0394) Scan Spot Position Map1CSingle
(300A,0395) Scan Spot Reordering Allowed3Code String
(300A,0396) Scan Spot Meterset Weights1CSingle
(300A,0398) Scanning Spot Size3Single
(300A,039A) Number of Paintings1CInteger String
(300A,03AC) Ion Wedge Position Sequence1CSequence
(300C,0050) Referenced Dose Reference Sequence3Sequence
(300A,03AA) Ion Wedge Sequence1CSequence
(300A,0420) General Accessory Sequence3Sequence
(300A,0505) Depth Dose Parameters Sequence3Sequence
(300C,0042) Referenced Reference Image Sequence3Sequence
(300C,006A) Referenced Patient Setup Number3Integer String
(300C,0080) Referenced Dose Sequence3Sequence
(300C,00A0) Referenced Tolerance Table Number3Integer String
(300C,00B0) Referenced Bolus Sequence1CSequence
ApprovalUModule - Plan
General ReferenceUModule - Plan
SOP CommonMModule - Plan
Common Instance ReferenceUModule - Plan
RT Ion Beams Treatment RecordCIOD
Ophthalmic Tomography ImageCIOD
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X-Ray 3D Craniofacial ImageCIOD
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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
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Legacy Converted Enhanced CT ImageCIOD
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Wide Field Ophthalmic Photography Stereographic Projection ImageCIOD
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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
Ophthalmic Optical Coherence Tomography En Face ImageCIOD
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Encapsulated STLCIOD
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Basic DirectoryCIOD

Built with by Innolitics, a team of medical imaging software developers.

Data synced with official DICOM standard on 12 May 2020. The DICOM Standard is under continuous maintenance, and the current official version is available at 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.

Isocenter to Range Shifter Distance Attribute

TypeOptional (3)
Value Multiplicity1
Value RepresentationSingle (FL)

Isocenter to downstream edge of range shifter (mm) at current control point. See Section C. and Section C.

Section C.

C. Virtual Source-Axis Distances and the Use of Trays in Ion Therapy

The apparent source position in ion therapy is not constant or can be different in x or y direction. The apparent source position (as measured from field size projections) shall be called Virtual Source, the distance from the virtual source to isocenter the Virtual SAD.

Most of the cases, no trays are used for blocks, compensators and wedges. However, the concept of trays together with the mounting position is useful for specifying exactly at which point the position of these devices shall be measured. Therefore, trays shall always be present, even though they are only virtual trays.

Figure C.8.8.25-1 shows an example.

Figure C.8.8.25-1. Virtual Source-Axis Distances

Examples: The use of the above Attributes for snout positioning and block/compensator manufacturing:

  1. Snout positioning:

    The mounting positions as depicted in the drawing are only examples. As the block tray does not really exist in most of the cases, it is only used as a reference position. As some machines use the downstream face of the block as a reference position for their snout positioning, it could make sense to define for example that the block mounting position must be SOURCE_SIDE. In this case, one uses the downstream face of the block as the reference position, which is the same side as used by the machine. This definition is always independent of the actual thickness of the block. The Isocenter-Block Distance is defined and the machine can deduce the position of the snout from this value.

  2. Scaling of block/compensator data for manufacturing

    The Isocenter position is always used as the reference position for all distances measured 'from isocenter'. Real size block and compensator manufacturing should be based on the distance from the Virtual Source (X/Y) to the device, i.e., VirtualSourceToDeviceDistance = VirtualSAD - IsocenterToDeviceDistance.

Section C.

C. Isocenter to Accessory Distance

Snout Position (300A,030D) is defined at the Control Point level and can therefore vary during the beam, causing all the accessories attached to the Snout (Applicator, Block, Compensator, etc.) to move as well.

For each accessory which is attached to the Snout and has its distance to isocenter defined at the Beam level (such as Isocenter to Beam Limiting Device Distance (300A,00BB), Isocenter to Compensator Tray Distance (300A,02E4), Isocenter to Block Tray Distance (300A,00F7) ), the prescribed physical position of the accessory is defined at the first Control Point.

This is consistent with the approach used for Beam Limiting Device Boundaries and Positions (see Section C. Leaf Position Boundaries).

For accessories which are attached to the Snout whose distance is defined at the Control Point level, such as Isocenter to Lateral Spreading Device Distance (300A,0374) and Isocenter to Range Modulator Distance (300A,038A), and are attached to the Snout, both the Snout Position (300A,030D) and the accessory distance must change by the same amount.