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
PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
Patient StudyUModule - Study
Clinical Trial StudyUModule - Study
General SeriesMModule - Series
Whole Slide Microscopy SeriesMModule - Series
Clinical Trial SeriesUModule - Series
Frame of ReferenceMModule - Frame of Reference
General EquipmentMModule - Equipment
Enhanced General EquipmentMModule - Equipment
General AcquisitionMModule - Acquisition
Multi-Resolution PyramidUModule - Multi-Resolution Pyramid
General ImageMModule - Image
General ReferenceUModule - Image
Microscope Slide Layer Tile OrganizationMModule - Image
Image PixelMModule - Image
Acquisition ContextMModule - Image
Multi-frame Functional GroupsMModule - Image
(0008,0023) Content Date1Date
(0008,0033) Content Time1Time
(0020,0013) Instance Number1Integer String
(0020,0242) SOP Instance UID of Concatenation Source1CUnique Identifier
(0020,9161) Concatenation UID1CUnique Identifier
(0020,9162) In-concatenation Number1CUnsigned Short
(0020,9163) In-concatenation Total Number3Unsigned Short
(0020,9228) Concatenation Frame Offset Number1CUnsigned Long
(0022,0028) Stereo Pairs Present3Code String
(0028,0008) Number of Frames1Integer String
(0028,6010) Representative Frame Number3Unsigned Short
(5200,9229) Shared Functional Groups Sequence1Sequence
(5200,9230) Per-Frame Functional Groups Sequence1CSequence
(0008,1140) Referenced Image Sequence2Sequence
(0008,9124) Derivation Image Sequence2Sequence
(0020,9111) Frame Content Sequence1Sequence
(0028,9110) Pixel Measures Sequence1Sequence
(0040,0710) Whole Slide Microscopy Image Frame Type Sequence1Sequence
(0040,9096) Real World Value Mapping Sequence1Sequence
(0048,0110) Specimen Reference Sequence2Sequence
(0048,0207) Optical Path Identification Sequence1Sequence
(0048,0106) Optical Path Identifier1Short String
(0048,021A) Plane Position (Slide) Sequence1Sequence
(7FE0,0003) Encapsulated Pixel Data Value Total Length3UV
Multi-frame DimensionMModule - Image
SpecimenMModule - Image
Whole Slide Microscopy ImageMModule - Image
Optical PathMModule - Image
Slide LabelCModule - Image
SOP CommonMModule - Image
Common Instance ReferenceMModule - Image
Frame ExtractionCModule - Image
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.

Optical Path Identifier Attribute

Tag(0048,0106)
TypeRequired (1)
KeywordOpticalPathIdentifier
Value Multiplicity1
Value RepresentationShort String (SH)

Uniquely identifies the path described in the Optical Path Sequence (0048,0105) by reference to an Item with the same Optical Path Identifier (0048,0106) value. See Section C.8.12.5.

Note

Part of the Optical Path Identification Functional Group Macro with usage: C

Required if Dimension Organization Type (0020,9311) is not TILED_FULL; may be present otherwise.

Section C.8.12.5

C.8.12.5 Optical Path Module

Table C.8.12.5-1 specifies the Attributes of the optical paths used in the VL imaging. Each optical path is a combination of illumination, filters, lenses, and sensors, and each combination is identified for possible reference by Attributes in other Modules. Additional optical path parameters may be specified in the Acquisition Context Module.

Table C.8.12.5-1. Optical Path Module Attributes

Attribute Name

Tag

Type

Attribute Description

Number of Optical Paths

(0048,0302)

1C

Number of Items in the Optical Path Sequence (0048,0105).

Required if Dimension Organization Type (0020,9311) is present with a value of TILED_FULL. May be present otherwise.

Optical Path Sequence

(0048,0105)

1

Describes the optical paths used during the acquisition of this image.

One or more Items shall be included in this Sequence.

See Section C.8.12.5.1.1

>Optical Path Identifier

(0048,0106)

1

Identifier for the optical path specified in the Sequence Item. The identifier shall be unique for each Item within the Optical Path Sequence.

>Optical Path Description

(0048,0107)

3

Description of the optical path specified in the Sequence Item.

>Illuminator Type Code Sequence

(0048,0100)

3

Type of illuminator.

Only a single Item is permitted in this Sequence.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

CID may be defined in the IOD constraints.

>Illumination Wave Length

(0022,0055)

1C

Nominal wavelength of the illuminator in nm. Required if Illumination Color Code Sequence (0048,0108) is not present. May be present otherwise.

>Illumination Color Code Sequence

(0048,0108)

1C

Color of the illuminator.

Only a single Item shall be included in this Sequence.

Required if Illumination Wave Length (0022,0055) is not present. May be present otherwise.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

CID may be defined in the IOD constraints.

>Illumination Type Code Sequence

(0022,0016)

1

Coded value for illumination method. See Section C.8.12.5.1.2.

One or more Items shall be included in this Sequence.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

CID may be defined in the IOD constraints.

>Light Path Filter Type Stack Code Sequence

(0022,0017)

3

Filters used in the light source (excitation) path.

One or more Items are permitted in this Sequence.

See Section C.8.12.5.1.3.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

CID may be defined in the IOD constraints.

>Light Path Filter Pass-Through Wavelength

(0022,0001)

3

Nominal pass-through wavelength of light path filter(s) in nm.

>Light Path Filter Pass Band

(0022,0002)

3

Pass band of light path filter(s) in nm. This Attribute has two Values. The first is the shorter and the second the longer wavelength relative to the peak. The values are for the - 3dB nominal (1/2 of peak) pass through intensity.

One of the two Values may be zero length, in which case it is a cutoff filter.

>Image Path Filter Type Stack Code Sequence

(0022,0018)

3

Describes stack of filters used in image (emission) path between the imaging target and the optical sensor.

One or more Items are permitted in this Sequence.

See Section C.8.12.5.1.3.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

CID may be defined in the IOD constraints.

>Image Path Filter Pass-Through Wavelength

(0022,0003)

3

Nominal pass-through wavelength of image path filter(s) in nm.

>Image Path Filter Pass Band

(0022,0004)

3

Pass band of image path filter(s) in nm. This Attribute has two Values. The first is the shorter and the second the longer wavelength relative to the peak. The values are for the - 3dB nominal (1/2 of peak) pass through intensity.

One of the two Values may be zero length, in which case it is a cutoff filter.

>Lenses Code Sequence

(0022,0019)

3

Lenses that were used in this optical path.

One or more Items are permitted in this Sequence.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

CID may be defined in the IOD constraints.

>Condenser Lens Power

(0048,0111)

3

Nominal power of the condenser lens.

>Objective Lens Power

(0048,0112)

3

Nominal power of the objective lens. If a single lens is used as both condenser and objective, its power is specified in this Attribute.

>Objective Lens Numerical Aperture

(0048,0113)

3

Nominal numerical aperture of the objective lens.

>Channel Description Code Sequence

(0022,001A)

1C

Describes the light color sensed for each channel to generate the image.

Required if this differs from the natural interpretation.

Note

  1. For MONOCHROME2, the natural interpretation is the full visible light spectrum. A full spectrum sensor may be presented with light of only a single color based on illumination and filters.

  2. Equipment may use a color Photometric Interpretation (RGB, YBR) as a container representing up to 3 channels of any detected wavelength.

Shall have the same number of Items as the value of Samples per Pixel Used (0028,0003) if present, or otherwise the value of Samples per Pixel (0028,0002). The channels shall be described in the order in which the channels are encoded.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

CID may be defined in the IOD constraints.

>Palette Color Lookup Table Sequence

(0048,0120)

3

For MONOCHROME2 images, provides a transform of the pixel values with this optical path into an RGB color representation. The LUT provides a mapping to an appropriate color or pseudo-color for display purposes.

Only a single Item is permitted in this Sequence.

>>Include Table C.7-22a “Palette Color Lookup Table Macro Attributes”

>ICC Profile

(0028,2000)

1C

An ICC Profile encoding the transformation of device-dependent stored pixel values into PCS-Values. See Section C.8.12.5.1.4

Required if Photometric Interpretation (0028,0004) is not MONOCHROME2, or if Palette Color Lookup Table Sequence (0048,0120) is present.

>Color Space

(0028,2002)

3

A label that identifies the well-known color space of the image. Shall be consistent with any ICC Profile (0028,2000) that is also present.

See Section C.11.15.1.2.


C.8.12.5.1 Optical Path Module Attribute Descriptions
C.8.12.5.1.1 Optical Path Sequence and Optical Path Identifier

The Optical Path Sequence (0048,0105) shall include an Item for every optical path used in the acquisition of the current image.

For single-frame images that do not include the Multi-frame Functional Groups Module, this Sequence shall include only one Item.

For images that use the Multi-frame Functional Groups Module, the optical path associated with each frame is identified by reference to the Optical Path Identifier (0048,0106) of this Sequence (see Optical Path Identification Sequence (0048,0207) in Section C.8.12.6.2). The Optical Path Sequence may include Items for defined optical paths that are not referenced by any frame.

Note

  1. Previously, the use of optical paths in LOCALIZER images and images referenced therein from the Section C.8.12.7 was described, but this usage has been retired. See PS3.3-2021c.

  2. The Optical Path Identifier is not necessarily numeric; it is a string of up to 16 characters (VR SH).

C.8.12.5.1.2 Illumination Type Code Sequence

Illumination Type Code Sequence (0022,0016) specifies the type of illumination of the imaging target. This Attribute may include multiple Items, as some techniques may involve multiple methods, or some method identifiers may not be completely descriptive.

Note

For example, this Sequence might include two Items, (111741, DCM, "Transmission illumination") and (111748, DCM, "Differential interference contrast") to indicate "Transmission DIC".

The type of illumination often prescribes the set of optical path components such as filters and prisms, and their arrangement in the optical path.

Note

For instance, phase contrast illumination will utilize a condenser annulus and a phase contrast plate; this may be indicated by an Item (111747, DCM, "Phase contrast illumination") in this Attribute, but with no further specification in the filters and lenses identification Attributes.

C.8.12.5.1.3 Light Path and Image Path Filter Type Stack Code Sequences

In some optical imaging methods, e.g., epifluorescence, there may be a single light path with its associated imaging components that is used in both illumination/excitation of the imaging target and in the transmitted/emitted path to the imaging sensor. In this case, the optical components are to be specified in the Image Path Filter Type Stack Code Sequence (0022,0018).

C.8.12.5.1.4 ICC Profile

ICC Profile (0028,2000) provides the transform for mapping stored color pixel values into ICC standard color Profile Connection Space (PCS). For MONOCHROME2 pixels that have a preferred color rendering through the Palette Color Lookup Table Sequence (0048,0120), this Attribute provides a mapping of that preferred RGB color rendering into PCS. The ICC Profile shall follow the requirements specified in Section C.11.15.1.1.