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Page 946​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

Acquisition Contrast​

(0008,9209)​

1C​

IndicationofacquisitioncontrastusedwithframesintheSOPInstance.​

 

 

 

See Section C.8.13.3.1.2 for a description and Defined Terms.​

 

 

 

RequiredifSOPClassUIDisnot"1.2.840.10008.5.1.4.1.1.4.4"(Legacy​

 

 

 

Converted). May be present otherwise.​

Functional Settling Phase​

(0018,9622)​

3​

Specifies if the acquisition used and stored settling phases.​

Frames Present​

 

 

Enumerated Values:​

 

 

 

YES​

NO​

C.8.13.3.1 MR Image Description Attribute Description​

C.8.13.3.1.1 Complex Image Component​

The value of Complex Image Component (0008,9208) Attribute shall be used to indicate which component of the complex represent-​ ation of the signal is represented in the pixel data.​

Table C.8-85 specifies the Defined Terms for Complex Image Component (0008,9208).​

Table C.8-85. Complex Image Component Attribute Values​

Defined Term Name​

Defined Term Description​

MAGNITUDE​

The magnitude component of the complex image data.​

PHASE​

The phase component of the complex image data.​

REAL​

The real component of the complex image data.​

IMAGINARY​

The imaginary component of the complex image data.​

MIXED​

Used only as a value in Complex Image Component (0008,9208) in the Enhanced MR Image​

 

ModuleifframeswithintheimageSOPInstancecontaindifferentvaluesfortheComplexImage​

 

Component Attribute in the MR Frame Type Functional Group.​

C.8.13.3.1.2 Acquisition Contrast​

Table C.8-86 specifies the Defined Terms for Acquisition Contrast (0008,9209).​

 

Table C.8-86. Acquisition Contrast Values​

Defined Term Name​

Defined Term Description​

DIFFUSION​

Diffusion weighted contrast​

FLOW_ENCODED​

Flow Encoded contrast​

FLUID_ATTENUATED​

Fluid Attenuated T2 weighted contrast​

PERFUSION​

Perfusion weighted contrast​

PROTON_DENSITY​

Proton Density weighted contrast​

STIR​

Short Tau Inversion Recovery​

TAGGING​

Superposition of thin saturation bands onto image​

T1​

T1 weighted contrast​

T2​

T2 weighted contrast​

T2_STAR​

T2* weighted contrast​

TOF​

Time Of Flight weighted contrast​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 947​

Defined Term Name​

Defined Term Description​

 

UNKNOWN​

ValueshouldbeUNKNOWNifacquisitioncontrastswerecombinedresultinginanunknown​

 

contrast. Also this value should be used when the contrast is not known.​

 

MIXED​

Used only as a value in Acquisition Contrast (0008,9209) Attribute in the Enhanced MR​

 

Image Module Attribute Description if frames within the image SOP Instance contain​

 

different values for the Acquisition Contrast Attribute in the MR Frame Type Functional​

 

Group.​

 

C.8.13.4 MR Pulse Sequence Module​

The primary purpose of this Module is to identify the pulse sequence and variations on that, which was used in creation of the image.​ Terminology is intended to be neutral, and allow equivalent sequences provided by different vendors to be classified the same.​

Table C.8-87 specifies the Attributes of the MR Pulse Sequence Module.​

Table C.8-87. MR Pulse Sequence Module Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Pulse Sequence Name​

(0018,9005)​

1C​

Name of the pulse sequence for annotation purposes. Potentially​

 

 

 

vendor-specific name.​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

MR Acquisition Type​

(0018,0023)​

1C​

Identification of spatial data encoding scheme.​

 

 

 

Defined Terms:​

 

 

 

1D​

 

 

 

2D​

 

 

 

3D​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

Echo Pulse Sequence​

(0018,9008)​

1C​

Echo category of pulse sequences.​

 

 

 

Enumerated Values:​

 

 

 

SPIN​

 

 

 

GRADIENT​

 

 

 

BOTH​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

Multiple Spin Echo​

(0018,9011)​

1C​

Multiple Spin Echo category of pulse sequence used to collect different lines​

 

 

 

in k-space for a single frame.​

Enumerated Values:​

YES​

NO​

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED and​

Echo Pulse Sequence (0018,9008) equals SPIN or BOTH.​

Otherwise may be present if Image Type (0008,0008) Value 1 is DERIVED​ and Echo Pulse Sequence (0018,9008) equals SPIN or BOTH.​

- Standard -​

Page 948​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

 

Attribute Description​

Multi-planar Excitation​

(0018,9012)​

1C​

Technique that simultaneously excites several volumes.​

 

 

 

Enumerated Values:​

 

 

 

 

YES​

 

 

 

 

NO​

 

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

 

Phase Contrast​

(0018,9014)​

1C​

Phase contrast pulse sequence is a pulse sequence in which the flowing​

 

 

 

spins are velocity encoded in phase.​

 

 

 

Enumerated Values:​

 

 

 

 

YES​

 

 

 

 

NO​

 

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

 

Velocity Encoding​

(0018,9092)​

1C​

Velocity encoding directions used for acquisition.​

Acquisition Sequence​

 

 

Required if Phase Contrast (0018,9014) equals YES.​

 

 

 

 

 

 

One or more Items shall be included in this Sequence.​

>Velocity Encoding​

(0018,9090)​

1​

The direction cosines of the velocity encoding vector with respect to the​

Direction​

 

 

patient. See Section C.7.6.2.1.1 for further explanation.​

Time of Flight Contrast​

(0018,9015)​

1C​

TimeofFlightcontrastiscreatedbytheinflowofbloodinthesaturatedplane.​

 

 

 

Enumerated Values:​

 

 

 

 

YES​

 

 

 

 

NO​

 

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

 

Arterial Spin Labeling​

(0018,9250)​

1C​

Arterial Spin Labeling contrast technique.​

Contrast​

 

 

Enumerated Values:​

 

 

 

 

 

 

 

 

CONTINUOUS​

a single long low powered RF pulse​

 

 

 

PSEUDOCONTINUOUS​multiple short low powered RF pulses​

 

 

 

PULSED​

a single short high powered RF pulse​

 

 

 

Required if Image Type (0008,0008) Value 3 is ASL. May be present​

 

 

 

otherwise.​

 

Steady State Pulse​

(0018,9017)​

1C​

Steady State Sequence.​

Sequence​

 

 

Defined Terms:​

 

 

 

 

 

FREE_PRECESSION​

TRANSVERSE​

TIME_REVERSED​

LONGITUDINAL​

NONE​

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

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 949​

Attribute Name​

Tag​

Type​

Attribute Description​

 

Echo Planar Pulse​

(0018,9018)​

1C​

Echo Planar category of Pulse Sequences.​

 

Sequence​

 

 

Enumerated Values:​

 

 

 

 

 

 

 

 

YES​

 

 

 

 

NO​

 

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

 

Saturation Recovery​

(0018,9024)​

1C​

Saturation recovery pulse sequence.​

 

Enumerated Values:​

YES​

NO​

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

Spectrally Selected​ (0018,9025)​ 1C​ Spectrally Selected Suppression.​

Suppression​

Defined Terms:​

FAT​

WATER​

FAT_AND_WATER​

SILICON_GEL​

NONE​

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

Oversampling Phase​

(0018,9029)​

1C​ Oversampling Phase.​

Enumerated Values:​

2D​ phase direction​ 3D​ out of plane direction​

2D_3D​both​

NONE​

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

Geometry of k-Space​ (0018,9032)​ 1C​ Geometry category of k-Space traversal.​

Traversal​

Defined Terms:​

RECTILINEAR​

RADIAL​

SPIRAL​

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

- Standard -​

Page 950​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

RectilinearPhaseEncode​

(0018,9034)​

1C​

Rectilinear phase encode reordering.​

Reordering​

 

 

Defined Terms:​

 

 

 

 

 

 

LINEAR​

 

 

 

CENTRIC​

 

 

 

SEGMENTED​

 

 

 

REVERSE_LINEAR​

 

 

 

REVERSE_CENTRIC​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED and​

 

 

 

Geometry of k-Space Traversal (0018,9032) equals RECTILINEAR.​

 

 

 

Otherwise may be present if Image Type (0008,0008) Value 1 is DERIVED​

 

 

 

and Geometry of k-Space Traversal (0018,9032) equals RECTILINEAR.​

Segmented k-Space​

(0018,9033)​

1C​

Segmentedk-Spacetraversal.IfGeometryofk-SpaceTraversalisrectilinear,​

Traversal​

 

 

multiple lines can be acquired at one time. If Geometry of k-Space Traversal​

 

 

 

is spiral or radial, paths can be interleaved and acquired at one time.​

 

 

 

Enumerated Values:​

 

 

 

SINGLE​ successive single echo coverage​

 

 

 

PARTIAL​segmented coverage​

 

 

 

FULL​ single shot full coverage​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

be present otherwise.​

Coverage of k-Space​

(0018,9094)​

1C​

Coverage of k-Space in the ky-kz plane.​

 

 

 

Defined Terms:​

 

 

 

FULL​

 

 

 

CYLINDRICAL​

 

 

 

ELLIPSOIDAL​

 

 

 

WEIGHTED​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED and​

 

 

 

MR Acquisition Type (0018,0023) equals 3D.​

 

 

 

Otherwise may be present if Image Type (0008,0008) Value 1 is DERIVED​

 

 

 

and MR Acquisition Type (0018,0023) equals 3D.​

Number of k-Space​

(0018,9093)​

1C​

Number of interleaves or shots.​

Trajectories​

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL or MIXED. May​

 

 

 

 

 

 

be present otherwise.​

C.8.13.5 Enhanced MR Image Functional Group Macros​

The following sections contain Functional Group Macros specific to the Enhanced MR Image IOD.​

Note​

The Attribute descriptions in the Functional Group Macros are written as if they were applicable to a single frame (i.e., the​ Macro is part of the Per-frame Functional Groups Sequence). If an Attribute is applicable to all frames (i.e., the Macro is part​ of the Shared Functional Groups Sequence) the phrase "this frame" in the Attribute description shall be interpreted to mean​ " for all frames".".​

C.8.13.5.1 MR Image Frame Type Macro​

Table C.8-88 specifies the Attributes of the MR Image Frame Type Functional Group Macro.​

- Standard -​

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