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
PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
Patient StudyUModule - Study
Clinical Trial StudyUModule - Study
General SeriesMModule - Series
Clinical Trial SeriesUModule - Series
DX SeriesMModule - Series
Frame of ReferenceUModule - Frame of Reference
General EquipmentMModule - Equipment
General AcquisitionMModule - Acquisition
General ImageMModule - Image
General ReferenceUModule - Image
Image PixelMModule - Image
Contrast/BolusUModule - Image
Display ShutterUModule - Image
DeviceUModule - Image
InterventionUModule - Image
SpecimenUModule - Image
DX Anatomy ImagedMModule - Image
DX ImageMModule - Image
DX DetectorMModule - Image
X-Ray CollimatorUModule - Image
DX PositioningUModule - Image
X-Ray Tomography AcquisitionUModule - Image
X-Ray Acquisition DoseUModule - Image
(0018,0060) KVP3Decimal String
(0018,1110) Distance Source to Detector3Decimal String
(0018,1111) Distance Source to Patient3Decimal String
(0018,1150) Exposure Time3Integer String
(0018,1151) X-Ray Tube Current3Integer String
(0018,1152) Exposure3Integer String
(0018,1153) Exposure in µAs3Integer String
(0018,1156) Rectification Type3Code String
(0018,115E) Image and Fluoroscopy Area Dose Product3Decimal String
(0018,1160) Filter Type3Short String
(0018,1191) Anode Target Material3Code String
(0018,11A0) Body Part Thickness3Decimal String
(0018,1405) Relative X-Ray Exposure3Integer String
(0018,1411) Exposure Index3Decimal String
(0018,1412) Target Exposure Index3Decimal String
(0018,1413) Deviation Index3Decimal String
(0018,7050) Filter Material3Code String
(0018,7052) Filter Thickness Minimum3Decimal String
(0018,7054) Filter Thickness Maximum3Decimal String
(0018,7056) Filter Beam Path Length Minimum3Single
(0018,7058) Filter Beam Path Length Maximum3Single
(0018,8150) Exposure Time in µS3Decimal String
(0018,8151) X-Ray Tube Current in µA3Decimal String
(0040,0302) Entrance Dose3Unsigned Short
(0040,0303) Exposed Area3Unsigned Short
(0040,0306) Distance Source to Entrance3Decimal String
(0040,0310) Comments on Radiation Dose3Short Text
(0040,0312) X-Ray Output3Decimal String
(0040,0314) Half Value Layer3Decimal String
(0040,0316) Organ Dose3Decimal String
(0040,0318) Organ Exposed3Code String
(0040,8302) Entrance Dose in mGy3Decimal String
(0040,8303) Entrance Dose Derivation3Code String
X-Ray GenerationUModule - Image
X-Ray FiltrationUModule - Image
X-Ray GridUModule - Image
Overlay PlaneCModule - Image
VOI LUTCModule - Image
Image HistogramUModule - Image
Acquisition ContextMModule - Image
SOP CommonMModule - Image
Common Instance ReferenceUModule - Image
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
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.

Exposed Area Attribute

Tag(0040,0303)
TypeOptional (3)
KeywordExposedArea
Value Multiplicity1-2
Value RepresentationUnsigned Short (US)

Typical dimension of the exposed area at the detector plane. If Rectangular: row dimension followed by column; if Round: diameter. Measured in cm.

Note

  1. The exposed area should be consistent with values specified in the X-Ray Collimator Module, if present.

  2. This may be an estimated value based on assumptions about the patient's body size and habitus.

  3. This Attribute was previously used in the Radiation Dose Module (Retired) with units in mm. This use has been retired. See PS3.3-2017c.

X-Ray Collimator Module

C.8.7.3 X-Ray Collimator Module

An X-Ray Collimator is a device placed close to the X-Ray Source to restrict the span of the X-Ray beam. It is often made of lead shutters. Figure C.8-9 presents in a graphical form its relationship with the Field Of View Dimensions (0018,1149).

Geometry of the collimator is specified with respect to a row and column coordinate system where the origin is the upper left hand pixel. This origin is specified by the values 1,1 for row/column. A row coordinate represent a number of raw spacing (vertical) and a column coordinate represents a column spacing (horizontal). Up to three different collimator shapes may be used and superimposed.

Figure C.8-9. Relationships of X-Ray Collimator


Table C.8-28. X-Ray Collimator Module Attributes

Attribute Name

Tag

Type

Attribute Description

Collimator Shape

(0018,1700)

1

Shape(s) of the collimator.

Enumerated Values:

RECTANGULAR

CIRCULAR

POLYGONAL

This multi-valued Attribute shall contain at most one of each Enumerated Value.

Include Table C.8-28b “X-Ray Collimator Dimensions Macro Attributes”


Table C.8-28b. X-Ray Collimator Dimensions Macro Attributes

Attribute Name

Tag

Type

Attribute Description

Collimator Left Vertical Edge

(0018,1702)

1C

Required if a value of Collimator Shape (0018,1700) is RECTANGULAR. Location of the left edge of the rectangular collimator with respect to pixels in the image given as column. See Section C.8.7.3.1.1.

Collimator Right Vertical Edge

(0018,1704)

1C

Required if a value of Collimator Shape (0018,1700) is RECTANGULAR. Location of the right edge of the rectangular collimator with respect to pixels in the image given as column. See Section C.8.7.3.1.1.

Collimator Upper Horizontal Edge

(0018,1706)

1C

Required if a value of Collimator Shape (0018,1700) is RECTANGULAR. Location of the upper edge of the rectangular collimator with respect to pixels in the image given as row. See Section C.8.7.3.1.1.

Collimator Lower Horizontal Edge

(0018,1708)

1C

Required if a value of Collimator Shape (0018,1700) is RECTANGULAR. Location of the lower edge of the rectangular collimator with respect to pixels in the image given as row. See Section C.8.7.3.1.1.

Center of Circular Collimator

(0018,1710)

1C

Required if a value of Collimator Shape (0018,1700) is CIRCULAR. Location of the center of the circular collimator with respect to pixels in the image given as row and column. See Section C.8.7.3.1.1.

Radius of Circular Collimator

(0018,1712)

1C

Required if a value of Collimator Shape (0018,1700) is CIRCULAR. Radius of the circular collimator with respect to pixels in the image given as a number of pixels along the row direction. See Section C.8.7.3.1.1.

Vertices of the Polygonal Collimator

(0018,1720)

1C

Required if a value of Collimator Shape (0018,1700) is POLYGONAL.

Multiple Values where the first set of two values are:

row of the origin vertex;

column of the origin vertex.

Two or more pairs of values follow and are the row and column coordinates of the other vertices of the polygon collimator. Polygon collimators are implicitly closed from the last vertex to the origin vertex and all edges shall be non-intersecting except at the vertices.


C.8.7.3.1 X-Ray Collimator Module Attribute Descriptions
C.8.7.3.1.1 Collimator Vertical and Horizontal Edges

These Attributes specify the pixel row or column where the X-Ray beam is fully obscured by a rectangular collimator:

  • if the left edge of the collimator is not visible, Collimator Left Vertical Edge (0018,1702) shall have a value of 0;

  • if the right edge of the collimator is not visible, Collimator Right Vertical Edge (0018,1704) value shall be 1 greater than the value of Columns (0028,0011) Attribute;

  • if the top edge of the collimator is not visible, Collimator Upper Horizontal Edge (0018,1706) shall have a value of 0;

  • if the bottom edge of the collimator is not visible, Collimator Lower Horizontal Edge (0018,1708) value shall be 1 greater than the value of Rows (0028,0010) Attribute.

Radiation Dose Module (Retired)

C.4.16 Radiation Dose Module (Retired)

Retired. See PS3.3-2017c