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
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
PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
Patient StudyUModule - Study
Clinical Trial StudyUModule - Study
General SeriesMModule - Series
CT SeriesMModule - Series
Clinical Trial SeriesUModule - 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
Multi-frame Functional GroupsMModule - Image
Multi-frame DimensionMModule - Image
Cardiac SynchronizationCModule - Image
Respiratory SynchronizationCModule - Image
Supplemental Palette Color Lookup TableCModule - Image
Acquisition ContextMModule - Image
DeviceUModule - Image
SpecimenUModule - Image
Enhanced CT ImageMModule - Image
(0008,0008) Image Type1Code String
(0008,002A) Acquisition DateTime1CDate Time
(0008,113A) Referenced Waveform Sequence3Sequence
(0008,9092) Referenced Image Evidence Sequence1CSequence
(0008,9121) Referenced Raw Data Sequence3Sequence
(0008,9154) Source Image Evidence Sequence1CSequence
(0008,9205) Pixel Presentation1Code String
(0008,9206) Volumetric Properties1Code String
(0008,9207) Volume Based Calculation Technique1Code String
(0008,9237) Referenced Presentation State Sequence1CSequence
(0018,9004) Content Qualification1CCode String
(0018,9073) Acquisition Duration1CDouble
(0018,9361) Multi-energy CT Acquisition3Code String
(0020,0012) Acquisition Number3Integer String
(0020,4000) Image Comments3Long Text
(0028,0002) Samples per Pixel1Unsigned Short
(0028,0004) Photometric Interpretation1Code String
(0028,0100) Bits Allocated1Unsigned Short
(0028,0101) Bits Stored1Unsigned Short
(0028,0102) High Bit1Unsigned Short
(0028,0301) Burned In Annotation1CCode String
(0028,0302) Recognizable Visual Features3Code String
(0028,2110) Lossy Image Compression1CCode String
(0028,2112) Lossy Image Compression Ratio1CDecimal String
(0028,2114) Lossy Image Compression Method1CCode String
(0054,0220) View Code Sequence3Sequence
(0054,0500) Slice Progression Direction3Code String
(0088,0200) Icon Image Sequence3Sequence
(2050,0020) Presentation LUT Shape1Code String
(300A,0122) Patient Support Angle3Decimal String
(300A,0129) Table Top Longitudinal Position3Decimal String
(300A,012A) Table Top Lateral Position3Decimal String
(300A,012C) Isocenter Position3Decimal String
(300A,0140) Table Top Pitch Angle3Single
(300A,0144) Table Top Roll Angle3Single
Enhanced Multi-energy CT AcquisitionCModule - Image
ICC ProfileUModule - Image
SOP CommonMModule - Image
Common Instance ReferenceUModule - Image
Frame ExtractionCModule - Image
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 19 March 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.

Image Type Attribute

Tag(0008,0008)
TypeRequired (1)
KeywordImageType
Value Multiplicity2-n
Value RepresentationCode String (CS)
Example Values
  • ['ORIGINAL', 'PRIMARY', 'OTHER']
  • ['ORIGINAL', 'PRIMARY', 'AXIAL']
  • ['ORIGINAL', 'PRIMARY']

Image characteristics. See Section C.8.16.1 and Section C.8.15.2.1.1.

Section C.8.16.1

C.8.16.1 Image Type and Frame Type

Image Type (0008,0008) and associated Attributes provide a high level description of a multi-frame SOP Instance. Image Type (0008,0008) contains the highest level summary of what is in the SOP Instance.

Frame Type (0008,9007) mirrors the corresponding Image Type Attribute and applies to the frame level.

If more than one value is used by the set of frames for a given Frame Type (0008,9007) Attribute value or associated Attribute value then the corresponding value of Image Type (0008,0008) or associated Attribute shall contain a value of MIXED. This indicates that a mixed set of values exists within the multi-frame SOP Instance.

The value MIXED shall only be used in Image Type (0008,0008) when the corresponding values for the individual frames are not equal. When a value of an Attribute is equal for all frames, the same value shall be used for the corresponding value of Image Type (0008,0008). Values 2 and 3 of Image Type (0008,0008) are an exception to the rule for MIXED: Values 2 and 3 may never have the value of MIXED as described in Section C.8.16.1.2 and Section C.8.16.1.3.

Image Type (0008,0008) and Frame Type (0008,9007) shall consist of four values, except that a fifth value shall be present if Multi-energy CT Acquisition (0018,9361) has a value of YES.

C.8.16.1.1 Pixel Data Characteristics

Value 1 of Image Type (0008,0008) and Frame Type (0008,9007) shall use one of the following Enumerated Values from Table C.8-127.

Value 1 of Image Type (0008,0008) and Value 1 of Frame Type (0008,9007) shall not be zero length.

Table C.8-127. Image Type and Frame Type Value 1

Enumerated Value Name

Enumerated Value Description

ORIGINAL

An image or frame is original if its pixel data was directly reconstructed from the original data that is obtained from the sensors of the imaging equipment, Image Type (0008,0008) Value 4 is NONE, and Volume Based Calculation Technique (0008,9207) is NONE.

Note

  1. For MR, original data is data directly reconstructed from k-space data.

  2. For CT, original frames are those directly reconstructed from projection data.

DERIVED

An image or frame is derived if its pixel data was calculated from original or other derived pixel data (i.e., it is not original).

MIXED

Used only as a value in Image Type (0008,0008) if frames within the SOP Instance contain different values for Value 1 in their Frame Type (0008,9007).


C.8.16.1.2 Patient Examination Characteristics

Value 2 for Image Type (0008,0008) and Frame Type (0008,9007) follows the standard definition and shall have the following Enumerated Value from Table C.8-128.

Value 2 of Image Type (0008,0008) and Value 2 of Frame Type (0008,9007) shall not be zero length.

Table C.8-128. Image Type and Frame Type Value 2

Enumerated Value Name

Enumerated Value Description

PRIMARY

See Section C.7.6.1.1.2


C.8.16.1.3 Image Flavor

Value 3 is an overall representation of the image type. This value may be a summary of several other Attributes or a duplication of one of the other Attributes to indicate the most important aspect of this image. Value 3 Image Flavor is to be used with Value 4 Derived Pixel Contrast to indicate the nature of the image set.

Note

For example Value 3 = DIFFUSION together with Value 4 = NONE indicates that the image set was originally collected for DIFFUSION.

If Value 3 = DIFFUSION together with Value 4 = DIFFUSION this indicates that the object contains DIFFUSION weighted post processed images.

Value 3 of Image Type (0008,0008) shall not be zero length.

Value 3 of Frame Type (0008,9007) may have the same value as found in Value 3 of Image Type (0008,0008), or may have a different value.

The Attribute value may not be MIXED as this value needs to be a summary of the primary purpose of the images, whether the frames have the same value or not.

Table C.8-129 specifies the Defined Terms for Value 3 for Image Type (0008,0008) and Frame Type (0008,9007) that are common to CT and MR. Additional Defined Terms are defined in the modality-specific Module and Macro definitions.

Table C.8-129. Image Type and Frame Type Value 3 Common

Defined Term Name

Defined Term Description

ANGIO

Collected for the purpose of angiography.

CARDIAC

Images of the heart.

CARDIAC_GATED

Cardiac gated images, other than of the heart.

CARDRESP_GATED

Cardiac and respiratory gated images.

DYNAMIC

An image in which the same anatomical volume is imaged at multiple times in order to capture images of a non-cyclic, time varying event. For example, imaging of the uptake of a tracer or contrast in a specific organ over time.

Note

This is different from gating techniques, in which the same anatomical volume is imaged during some portion of a cyclic event, e.g., inspiration or R-R Interval.

FLUOROSCOPY

Real-time collection of single slices (e.g., CT or MR Fluoroscopy).

LOCALIZER

Collected for the purpose of planning other images.

MOTION

Collected for looking at body motion.

PERFUSION

Collected for the purposes of perfusion calculations.

PRE_CONTRAST

Collected before contrast was administered.

POST_CONTRAST

Collected during or after contrast was administered.

RESP_GATED

Respiratory gated images.

REST

Cardiac rest image set.

STATIC

A group of frames at varying spatial locations acquired at the same time.

STRESS

Cardiac stress image set.

VOLUME

Set of frames that define a regularly sampled volume.

NON_PARALLEL

Set of frames that are not parallel.

PARALLEL

Set of frames that are parallel but do not constitute a regularly sampled volume.

WHOLE_BODY

A group of frames of the whole body; the frames may be acquired at various times (as distinct from STATIC).


C.8.16.1.4 Derived Pixel Contrast

Value 4 shall be used to indicate derived pixel contrast - generally, contrast created by combining or processing images with the same geometry. Value 4 shall have a value of NONE when Value 1 is ORIGINAL.

Value 4 may have the value QUANTITY if the derived pixel contrast is described in the Quantity Definition Sequence (0040,9220) of the Real World Value Mapping Macro.

Note

If more than one of the following derived types is applicable, then it is up to the generating application to specify the value that best characterizes the derived image.

Value 4 of Image Type (0008,0008) and Value 4 of Frame Type (0008,9007) shall not be zero length unless the SOP Class UID is "1.2.840.10008.5.1.4.1.1.2.2" or "1.2.840.10008.5.1.4.1.1.4.4" or "1.2.840.10008.5.1.4.1.1.128.1" (Legacy Converted).

Table C.8-130 specifies the Defined Terms for Value 4 for Image Type (0008,0008) and Frame Type (0008,9007) that are common to CT and MR. Additional Defined Terms are defined in the modality-specific Module and Macro definitions.

Table C.8-130. Image Type and Frame Type Value 4 Common

Defined Term Name

Defined Term Description

ADDITION

Created through Pixel by pixel addition operation.

DIVISION

Created through Pixel by pixel division operation.

MASKED

Created through Pixel by pixel masking operation.

MAXIMUM

Created through Pixel by Pixel maximum operation.

MEAN

Created through Pixel by pixel mean operation.

MINIMUM

Created through Pixel by Pixel minimum operation.

MULTIPLICATION

Created through Pixel by pixel multiplication operation.

RESAMPLED

Pixels have been spatially re-sampled, e.g., MPR.

STD_DEVIATION

Standard Deviation.

SUBTRACTION

Created through Pixel by pixel subtraction operation.

NONE

Not a calculated image.

QUANTITY

Derived pixel values are a quantity described by Quantity Definition Sequence (0040,9220) of the Real World Value Mapping Macro.

MIXED

Used only as value in Image Type (0008,0008) if frames within the image SOP Instance contain different values for value 4 in their Frame Type (0008,9007) Attribute.


Section C.8.15.2.1.1

C.8.15.2.1.1 Image Type and Frame Type

In addition to the requirements specified in Section C.8.16.1 Image Type and Frame Type, the following additional requirements and Defined Terms are specified.

These requirements and Defined Terms are also applicable to Frame Type (0008,9007).

C.8.15.2.1.1.1 Pixel Data Characteristics

Value 1 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.1. No additional requirements or Defined Terms.

C.8.15.2.1.1.2 Patient Examination Characteristics

Value 2 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.2. No additional requirements or Defined Terms.

C.8.15.2.1.1.3 Image Flavor

Table C.8-115 specifies the Defined Terms for CT additional to those defined in Section C.8.16.1.3 for Value 3 for Image Type (0008,0008) and Frame Type (0008,9007).

Table C.8-115. Image Type and Frame Type Value 3 for CT

Defined Term Name

Defined Term Description

ATTENUATION

Collected for the purpose of performing attenuation corrections (e.g., PET attenuation correction).

CARDIAC_CTA

Images of the heart collected for the purpose of CT Coronary Angiography (CTA).

CARDIAC_CASCORE

Images of the heart collected for the purpose of CT Coronary Calcium Scoring.

REFERENCE

Collected for anatomical reference for PET or SPECT.


C.8.15.2.1.1.4 Derived Pixel Contrast

Table C.8-116 specifies the Defined Terms for CT additional to those defined in Section C.8.16.1.4 for Value 4 for Image Type (0008,0008) and Frame Type (0008,9007).

Table C.8-116. Image Type and Frame Type Value 4 for CT

Defined Term Name

Defined Term Description

FILTERED

An image filter has been applied.

MEDIAN

Pixel by pixel median.

ENERGY_PROP_WT

Image pixels created through proportional weighting of multiple acquisitions at distinct X-Ray energies.


C.8.15.2.1.1.5 Multi-energy CT Images

Table C.8-116b specifies the Defined Terms for CT for Value 5 for Image Type (0008,0008) and Frame Type (0008,9007). Image Type (0008,0008) Value 5 shall be present if Multi-energy CT Acquisition (0018,9361) has a value of YES.

Table C.8-116b. Image Type and Frame Type Value 5 for CT

Defined Term Name

Defined Term Description

VMI

Virtual Monoenergetic Image. Each real-world value mapped pixel represents CT Hounsfield units and is analogous to a CT image created by a monoenergetic (of a specific keV value) X-Ray beam.

MAT_SPECIFIC

Material-Specific Image. Each real-world value mapped pixel value represents a property of a material such as attenuation, concentration or density.

MAT_REMOVED

An image with the attenuation contribution of one or more materials removed. For pixels that did not contain any of the removed material(s), the pixel values are unchanged.

MAT_FRACTIONAL

Material-Fractional Image. Each real-world value mapped pixel represents the fraction of a voxel occupied by a material.

EFF_ATOMIC_NUM

Effective Atomic Number Image. Each real-world value mapped pixel represents Effective Atomic Number of the materials in the voxel.

ELECTRON_DENSITY

Electron Density Image. Each real-world value mapped pixel represents the number of electrons per unit volume or the electron density relative to water.

MAT_MODIFIED

Material-Modified Image. CT Image where real-world value mapped pixels have been modified to highlight a certain target material (either by partially suppressing the background or by enhancing the target material), or to partially suppress the target material.

MAT_VALUE_BASED

Value-Based Image. CT Image where real-world value mapped pixels represent a certain value for a specified material

MIXED

Used only as a value in Image Type (0008,0008) if frames within the image SOP Instance contain different values for Value 5 in their Frame Type (0008,9007).


Note

The Defined Terms in Table C.8-116b are also used as Defined Terms for Value 4 of the CT Image IOD multi-energy Image Type (see Section C.8.2.1.1.1).