CR ImageCIOD
CT ImageCIOD
MR ImageCIOD
NM ImageCIOD
US ImageCIOD
US Multi-frame ImageCIOD
Secondary Capture ImageCIOD
Multi-frame Single Bit SC ImageCIOD
Multi-frame Grayscale Byte SC ImageCIOD
Multi-frame Grayscale Word SC ImageCIOD
Multi-frame True Color SC ImageCIOD
X-Ray Angiographic ImageCIOD
X-Ray Radiofluoroscopic ImageCIOD
RT ImageCIOD
RT DoseCIOD
RT Structure SetCIOD
RT PlanCIOD
PET 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
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
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
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 Structured ReportCIOD
Planned Imaging Agent Administration SRCIOD
Performed Imaging Agent Administration SRCIOD
Rendition Selection DocumentCIOD
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
PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
Patient StudyUModule - Study
Clinical Trial StudyUModule - Study
General SeriesMModule - Series
Clinical Trial SeriesUModule - Series
Enhanced Mammography SeriesMModule - Series
Frame of ReferenceMModule - Frame of Reference
SynchronizationCModule - Frame of Reference
General EquipmentMModule - Equipment
Enhanced General EquipmentMModule - Equipment
Image PixelMModule - Image
Enhanced Contrast/BolusCModule - Image
DeviceUModule - Image
InterventionUModule - 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
Multi-frame DimensionUModule - Image
Image - Equipment Coordinate RelationshipUModule - Image
SpecimenUModule - Image
X-Ray 3D ImageMModule - Image
Breast Tomosynthesis Contributing SourcesUModule - Image
Breast Tomosynthesis AcquisitionUModule - Image
X-Ray 3D ReconstructionUModule - Image
Breast ViewMModule - Image
SOP CommonMModule - Image
Common Instance ReferenceUModule - Image
Frame ExtractionCModule - Image
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
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
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.

In-concatenation Total Number Attribute

Tag(0020,9163)
TypeOptional (3)
KeywordInConcatenationTotalNumber
Value Multiplicity1
Value RepresentationUnsigned Short (US)

The number of SOP Instances sharing the same Concatenation UID.

If present, shall have a value greater than one, unless an IOD overrides this constraint to enumerate a value of 1 to prevent the use of Concatenations (e.g., see Section C.8.17.7 and Section C.8.17.16).

Section C.8.17.7

C.8.17.7 Ophthalmic Tomography Image Module

Table C.8.17.7-1 specifies the Attributes that describe an Image produced by Ophthalmic Tomography imaging modalities.

Table C.8.17.7-1. Ophthalmic Tomography Image Module Attributes

Attribute Name

Tag

Type

Attribute Description

Ophthalmic Volumetric Properties Flag

(0022,1622)

1C

Whether this SOP Instance is suitable for OCT volumetric processing.

Required if this SOP Instance is suitable for OCT volumetric processing. May be present otherwise.

Enumerated Values:

YES

NO

Image Type

(0008,0008)

1

Image identification characteristics. See Section C.7.6.1.1.2 for Enumerated Values and Defined Terms and further explanation.

Samples Per Pixel

(0028,0002)

1

Number of samples (planes) in this image. See Section C.7.6.3.1.1 for further explanation.

Enumerated Values:

1

Acquisition DateTime

(0008,002A)

1

The date and time that the acquisition of data started.

Note

The synchronization of this time with an external clock is specified in the synchronization Module in Acquisition Time synchronized (0018,1800).

Acquisition Duration

(0018,9073)

1C

The scan time in seconds used to create all frames of an Ophthalmic Tomography image.

Required if Image Type (0008,0008) Value 1 is ORIGINAL. May be present otherwise.

Acquisition Number

(0020,0012)

1

A number identifying the single continuous gathering of data over a period of time that resulted in this image.

Photometric Interpretation

(0028,0004)

1

Specifies the intended interpretation of the pixel data.

Enumerated Values:

MONOCHROME2

Pixel Representation

(0028,0103)

1

Data representation of pixel samples.

Enumerated Values:

0

Bits Allocated

(0028,0100)

1

Number of bits allocated for each pixel sample. Each sample shall have the same number of bits allocated.

Enumerated Values:

8

16

Bits Stored

(0028,0101)

1

Number of bits stored for each pixel sample. Each sample shall have the same number of bits stored.

Enumerated Values:

8

12

16

High Bit

(0028,0102)

1

Most significant bit for pixel sample data. Each sample shall have the same high bit.

High Bit (0028,0102) shall be one less than Bits Stored

Presentation LUT Shape

(2050,0020)

1

Specifies an identity transformation for the Presentation LUT, such that the output of all grayscale transformations defined in the IOD containing this Module are defined to be P-Values.

Enumerated Values:

IDENTITY

output is in P-Values.

Lossy Image Compression

(0028,2110)

1

Specifies whether an Image has undergone lossy compression (at a point in its lifetime).

Enumerated Values:

00

Image has NOT been subjected to lossy compression.

01

Image has been subjected to lossy compression.

Once this value has been set to 01 it shall not be reset.

See Section C.7.6.1.1.5.

Lossy Image Compression Ratio

(0028,2112)

1C

Describes the approximate lossy compression ratio(s) that have been applied to this image.

See Section C.7.6.1.1.5.2.

Required if Lossy Image Compression (0028,2110) is "01".

Lossy Image Compression Method

(0028,2114)

1C

A label for the lossy compression method(s) that have been applied to this image.

See Section C.7.6.1.1.5.1.

Required if Lossy Image Compression (0028,2110) is "01".

Burned In Annotation

(0028,0301)

1

Indicates whether or not image contains sufficient burned in annotation to identify the patient and date the image was acquired.

Enumerated Values:

NO

Recognizable Visual Features

(0028,0302)

3

Indicates whether or not the image contains sufficiently recognizable visual features to allow the image or a reconstruction from a set of images to identify the patient.

Enumerated Values:

YES

NO

If this Attribute is absent, then the image may or may not contain recognizable visual features.

Concatenation Frame Offset Number

(0020,9228)

1

Offset of the first frame in a multi-frame image of a concatenation.

Enumerated Values:

0

In-concatenation Number

(0020,9162)

1

Identifier for one SOP Instance belonging to a concatenation.

Enumerated Values:

1

In-concatenation Total Number

(0020,9163)

1

The number of SOP Instances sharing the same Concatenation UID (0020,9161).

See Section C.8.17.16.3 for further explanation.

Enumerated Values:

1

Image Comments

(0020,4000)

3

User-defined comments about the image


The value constraints on Concatenation Frame Offset Number (0020,9228), In-concatenation Number (0020,9162), and In-concatenation Total Number (0020,9163) have the effect of preventing the use of concatenations.

The Attribute Ophthalmic Volumetric Properties Flag (0022,1622) is YES when the Ophthalmic Tomography Image Storage SOP Instance encodes volumetric spatial information (e.g. Frame of Reference, Pixel Measures, Plane Orientation, Plane Position, etc.). For example, ophthalmic tomography volumetric information is required when implementations encode Surface Segmentation SOP Instance(s) (e.g., surface segmentation is applied to the structural OCT volume to delineate the anatomical boundaries) and/or an Ophthalmic Optical Coherence Tomography B-scan Volume Analysis Storage SOP Instance (e.g., angiographic (blood flow) volume information) based upon the volumetric Ophthalmic Tomography Image Storage SOP Instance.

Section C.8.17.16

C.8.17.16 Ophthalmic Optical Coherence Tomography B-scan Volume Analysis Image Module

Table C.8.17.16-1 specifies the Attributes that describe the Ophthalmic Optical Coherence Tomography B-scan Volume Analysis Image Module.

Table C.8.17.16-1. Ophthalmic Optical Coherence Tomography B-scan Volume Analysis Image Module Attributes

Attribute Name

Tag

Type

Attribute Description

Image Type

(0008,0008)

1

Image identification characteristics.

Enumerated Values for Value 1:

ORIGINAL

Enumerated Values for Value 2:

PRIMARY

Instance Number

(0020,0013)

1

A number that identifies this SOP Instance.

Content Time

(0008,0033)

1

The time the image pixel data creation started.

Content Date

(0008,0023)

1

The date the image pixel data creation started.

Bits Allocated

(0028,0100)

1

Number of bits allocated for each pixel sample.

Enumerated Values:

8

16

Bits Stored

(0028,0101)

1

Number of bits stored for each pixel sample.

High Bit

(0028,0102)

1

Most significant bit for pixel sample data. Shall be one less than the value in Bits Stored (0028,0101).

Samples per Pixel

(0028,0002)

1

Number of samples (planes) in this image.

Enumerated Values:

1

Photometric Interpretation

(0028,0004)

1

Specifies the intended interpretation of the pixel data.

Enumerated Value:

MONOCHOME2

Pixel Representation

(0028,0103)

1

Data representation of pixel samples.

Enumerated Values:

1

Presentation LUT Shape

(2050,0020)

1

Specifies an identity transformation for the Presentation LUT such that the output of all grayscale transformations are defined to be in P-Values.

Enumerated Values:

IDENTITY

output is in P-Values

Lossy Image Compression

(0028,2110)

1

Specifies whether an Image has undergone lossy compression (at a point in its lifetime) , or is derived from lossy compressed images.

Enumerated Values:

00

Image has NOT been subjected to lossy compression.

01

Image has been subjected to lossy compression.

Once this value has been set to 01 it shall not be reset.

See Section C.8.32.2.1 and Section C.7.6.1.1.5.

Lossy Image Compression Ratio

(0028,2112)

1C

Describes the approximate lossy compression ratio(s) that have been applied to this image.

See Section C.7.6.1.1.5.2.

Required if present in the source images or this IOD Instance has been compressed.

Lossy Image Compression Method

(0028,2114)

1C

A label for the lossy compression method(s) that have been applied to this image.

See Section C.7.6.1.1.5.1.

Required if present in the source images or this IOD Instance has been compressed. See Section C.8.32.2.1.

Burned In Annotation

(0028,0301)

1

Indicates whether or not image contains sufficient burned in annotation to identify the patient and date the image was acquired.

Enumerated Values:

NO

Recognizable Visual Features

(0028,0302)

1

Indicates whether or not the image contains sufficiently recognizable visual features to allow the image or a reconstruction from a set of images to identify the patient.

Enumerated Values:

YES

NO

Acquisition Method Algorithm Sequence

(0022,1423)

1

Software algorithm used by the acquisition method.

Only a single Item shall be included in this Sequence.

>Include Table 10-19 “Algorithm Identification Macro Attributes”

For Algorithm Family Code Sequence (0066,002F) Baseline CID 4270 “OCT-A Processing Algorithm Families”.

OCT B-scan Analysis Acquisition Parameters Sequence

(0022,1640)

1

Conveys raw data parameters captured during the B-scan acquisition process.

One or more Items are permitted in this Sequence. More than one Item indicates that multiple scan patterns have been used to acquire the raw data. See Section C.8.17.16.2 for further explanation.

>Scan Pattern Type Code Sequence

(0022,1618)

1

The scan pattern type used to generate this SOP Instance.

Only a single Item shall be included in this Sequence.

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

Defined CID CID 4272 “Opt Scan Pattern Types”

>Number Of B-scans Per Frame

(0022,1642)

1

The number of B-scans performed at the same spatial location (B-scan slab). See Section C.8.17.16.2 for further explanation.

>B-scan Slab Thickness

(0022,1643)

1

Nominal thickness of each B-scan slab, in mm. See Section C.8.17.16.2 for further explanation.

>Distance Between B-scan Slabs

(0022,1644)

1

Nominal distance between adjacent B-scan slabs, in mm. See Section C.8.17.16.2 for further explanation.

>B-scan Cycle Time

(0022,1645)

1C

Nominal time (in msec) between individual B-scans. See Section C.8.17.16.1.1 for further explanation.

Required if B-scan Cycle Time Vector (0022,1646) is absent.

>B-scan Cycle Time Vector

(0022,1646)

1C

An array that contains the real time increments (in msec) between B-scans. See Section C.8.17.16.1.1 for further explanation.

Required if B-scan Cycle Time (0022,1645) is absent.

Note

scan time + latency between B-scans

>A-scan Rate

(0022,1649)

3

Frequency, in kHz, of the A-scan used to acquire the raw image data.

>B-scan Rate

(0022,1650)

3

Frequency, in Hz, of the B-scan used to acquire the raw image data.

Concatenation Frame Offset Number

(0020,9228)

1

Offset of the first frame in a multi-frame image of a concatenation.

Enumerated Values:

0

In-concatenation Number

(0020,9162)

1

Identifier for one SOP Instance belonging to a concatenation.

Enumerated Values:

1

In-concatenation Total Number

(0020,9163)

1

The number of SOP Instances sharing the same Concatenation UID (0020,9161). See Section C.8.17.16.3 for further explanation.

Enumerated Values:

1

Image Comments

(0020,4000)

3

User-defined comments about the image


C.8.17.16.1 Ophthalmic Optical Coherence Tomography B-scan Volume Analysis Image Module Attribute Descriptions
C.8.17.16.1.1 B-scan Cycle Time and B-scan Cycle Time Vector

The B-scan Cycle Time (0022,1645) is the nominal scan time (in milliseconds) plus the latency between the individual repeats of the B-scan at the same location. The B-scan Cycle Time Vector can be used if the time for the repeats are not uniform. Either the B-scan Cycle Time (0022,1645) or the B-scan Cycle Time Vector (0022,1646) are required.

B-scan Cycle Time shall be used in the following manner to calculate 'the relative time' for each B-scan:

  • B-scan Cycle 'Relative Time' (n) = B-scan Cycle Delay + B-scan Cycle Time * (n-1)

where:

  • n = number of B-scan cycles within the frame and the first B-scan number is one

Note

When there is only one B-scan present, B-scan Cycle Time (0022,1645) may have either a value of 0, or a nominal value that would apply if there were multiple B-scans.

B-scan Cycle Time Vector (0022,1646) is an array that contains the time increments (in milliseconds) between the nth B-scan cycle and the previous B-scan cycle for a frame. The first B-scan cycle always has a time increment of 0. The B-scan Cycle Time Vector shall be used in the following manner to calculate 'relative time' T(n)for B-scan Cycle n:

where Δti is the ith B-scan Cycle Time Vector component.

C.8.17.16.2 Ophthalmic Optical Coherence Tomography B-scan Volume Analysis Acquisition Parameters Expected Use

The acquisition technique of ophthalmic tomography B-scan volume analysis (e.g., OCT angiography blood flow information) is based on the same mechanism as used for ophthalmic tomography images. Therefore, B-scans are used for individual image frames of the acquired volume. The frames of the resulting volume are calculated based on a number of repeated B-scans at the same spatial location. So the frame of an Ophthalmic Tomography B-scan Volume Analysis SOP Instance is not a B-scan, but a data aggregation of B-scans from the raw data of the acquisition.

To convey the information about the acquisition of the raw data, which are not typically in the scope of DICOM, the OCT B-scan Analysis Acquisition Parameters Sequence (0022,1640) is used. The parameters are provided for the user to assess the quality of the resulting B-scan volume analysis as well as to provide a means to compare volumes created by different devices. Furthermore the user is able to identify if a vendor-recommended protocol has been used to acquire the raw data.

The OCT B-scan Analysis Acquisition Parameters Sequence contains at least one Item. It can contain more than one if multiple scan patterns have been used to acquire the raw data and are used to calculate the volume data.

Number of B-scans Per Frame (0022,1642) can be used to provide an indication about the resulting image quality. In principal, the more B-scans averaged the better but as a high number of scans slows down the acquisition process, the resulting data becomes prone to noise introduced by eye movements, which are not related to blood flow. Furthermore, the number of B-scans averaged can be used to determine whether the acquisition was based on a vendor-specific protocol, or if the user changed the protocol.

The B-scan Slab Thickness (0022,1643) and Distance Between B-scan Slabs (0022,1644) provide information about the density of the sampling pattern used to acquire the volume data. The calculation of the volume (Ophthalmic Tomography B-scan Volume Analysis SOP Instance) is based on this information.

C.8.17.16.3 Data Subsets

Applications may find it useful to break up an OPT image or B-scan volume into multiple data subsets. There are two mechanisms in DICOM to achieve this: Concatenations and Multiple SOP Instances.

Concatenations are not permitted in the Ophthalmic Tomography Image and Ophthalmic Optical Coherence Tomography B-scan Volume Analysis IODs.

However, an OPT image or a B-scan volume can be encoded in multiple SOP Instances. For example:

  1. All frames of the volume are collected and transmitted in one multi-frame SOP Instance (e.g., one SOP Instance with 30 frames).

  2. Each frame of the volume is transmitted in one SOP Instance where the number of frames is equal to one (e.g., 30 SOP Instances with 1 frame each).

  3. The frames in the volume are transmitted in multiple SOP Instances (e.g., 3 SOP Instances with 10 frames each).