CR ImageCIOD
CT ImageCIOD
MR ImageCIOD
NM ImageCIOD
US ImageCIOD
US Multi-frame ImageCIOD
Secondary Capture ImageCIOD
Multi-frame Single Bit SC ImageCIOD
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Multi-frame Grayscale Word SC ImageCIOD
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Real-Time Video Endoscopic ImageCIOD
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Grayscale Softcopy Presentation StateCIOD
Color Softcopy Presentation StateCIOD
Pseudo-Color Softcopy Presentation StateCIOD
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Basic Structured DisplayCIOD
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Basic Voice Audio WaveformCIOD
12-Lead ECGCIOD
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Spatial FiducialsCIOD
Ophthalmic Photography 8 Bit ImageCIOD
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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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RT Ion PlanCIOD
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,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
SegmentationCIOD
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Color PaletteCIOD
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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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Corneal Topography MapCIOD
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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
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Content Assessment ResultsCIOD
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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 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.

Isocenter Position Attribute

Tag(300A,012C)
TypeConditionally Required, Empty if Unknown (2C)
KeywordIsocenterPosition
Value Multiplicity3
Value RepresentationDecimal String (DS)

Isocenter coordinates (x,y,z) in the Patient-Based Coordinate System described in Section C.7.6.2.1.1 (mm). Required for first Item of Segment Control Point Sequence, or if Segment Isocenter Position changes during Beam.

Section C.7.6.2.1.1

C.7.6.2.1.1 Image Position and Image Orientation

Image Position (0020,0032) specifies the x, y, and z coordinates of the upper left hand corner of the image; it is the center of the first voxel transmitted. Image Orientation (0020,0037) specifies the direction cosines of the first row and the first column with respect to the patient. These Attributes shall be provide as a pair. Row value for the x, y, and z axes respectively followed by the Column value for the x, y, and z axes respectively.

The direction of the axes is defined fully by the patient's orientation.

If Anatomical Orientation Type (0010,2210) is absent or has a value of BIPED, the x-axis is increasing to the left hand side of the patient. The y-axis is increasing to the posterior side of the patient. The z-axis is increasing toward the head of the patient.

If Anatomical Orientation Type (0010,2210) has a value of QUADRUPED, the

  • x-axis is increasing to the left (as opposed to right) side of the patient

  • the y-axis is increasing towards

    • the dorsal (as opposed to ventral) side of the patient for the neck, trunk and tail,

    • the dorsal (as opposed to ventral) side of the patient for the head,

    • the dorsal (as opposed to plantar or palmar) side of the distal limbs,

    • the cranial (as opposed caudal) side of the proximal limbs, and

  • the z-axis is increasing towards

    • the cranial (as opposed to caudal) end of the patient for the neck, trunk and tail,

    • the rostral (as opposed to caudal) end of the patient for the head, and

    • the proximal (as opposed to distal) end of the limbs

Note

  1. The axes for quadrupeds are those defined and illustrated in Smallwood et al for proper anatomic directional terms as they apply to various parts of the body.

  2. It should be anticipated that when quadrupeds are imaged on human equipment, and particularly when they are position in a manner different from the traditional human prone and supine head or feet first longitudinal position, then the equipment may well not indicate the correct orientation, though it will remain an orthogonal Cartesian right-handed system that could be corrected subsequently.

The Patient-Based Coordinate System is a right handed system, i.e., the vector cross product of a unit vector along the positive x-axis and a unit vector along the positive y-axis is equal to a unit vector along the positive z-axis.

Note

If a patient is positioned parallel to the ground, in dorsal recumbency (i.e., for humans, face-up on the table), with the caudo-cranial (i.e., for humans, feet-to-head) direction the same as the front-to-back direction of the imaging equipment, the direction of the axes of this Patient-Based Coordinate System and the Equipment-Based Coordinate System in previous versions of this Standard will coincide.

The Image Plane Attributes, in conjunction with the Pixel Spacing Attribute, describe the position and orientation of the image slices relative to the Patient-Based Coordinate System. In each image frame Image Position (Patient) (0020,0032) specifies the origin of the image with respect to the Patient-Based Coordinate System. RCS and Image Orientation (Patient) (0020,0037) values specify the orientation of the image frame rows and columns. The mapping of pixel location (i,j) to the RCS is calculated as follows:

Equation C.7.6.2.1-1. 


Where:

  • Pxyz The coordinates of the voxel (i,j) in the frame's image plane in units of mm.

  • Sxyz The three values of Image Position (Patient) (0020,0032). It is the location in mm from the origin of the RCS.

  • Xxyz The values from the row (X) direction cosine of Image Orientation (Patient) (0020,0037).

  • Yxyz The values from the column (Y) direction cosine of Image Orientation (Patient) (0020,0037).

  • i Column index to the image plane. The first column is index zero.

  • Δi Column pixel resolution of Pixel Spacing (0028,0030) in units of mm.

  • j Row index to the image plane. The first row index is zero.

  • Δj Row pixel resolution of Pixel Spacing (0028,0030) in units of mm.

Additional constraints apply:

  1. The row and column direction cosine vectors shall be orthogonal, i.e., their dot product shall be zero.

  2. The row and column direction cosine vectors shall be normal, i.e., the dot product of each direction cosine vector with itself shall be unity.