C.8.13.3 MR Image Description Macro

C.8.13.3 MR Image Description Macro (Current)
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Table C.8-84 specifies the Attributes of the MR Image Description Macro.

Table C.8-84. MR Image Description Macro Attributes

Attribute Name	Tag	Type	Attribute Description
Complex Image Component	(0008,9208)	1C	Representation of complex data of frames in the SOP Instance. See Section C.8.13.3.1.1 for a description and Defined Terms. Required if SOP Class UID is not "1.2.840.10008.5.1.4.1.1.4.4" (Legacy Converted). May be present otherwise.
Acquisition Contrast	(0008,9209)	1C	Indication of acquisition contrast used with frames in the SOP Instance. See Section C.8.13.3.1.2 for a description and Defined Terms. Required if SOP Class UID is not "1.2.840.10008.5.1.4.1.1.4.4" (Legacy Converted). May be present otherwise.
Functional Settling Phase Frames Present	(0018,9622)	3	Specifies if the acquisition used and stored settling phases. Enumerated Values: YES NO

Attribute Name

Tag

Type

Attribute Description

Complex Image Component

(0008,9208)

Representation of complex data of frames in the SOP Instance. See Section C.8.13.3.1.1 for a description and Defined Terms.

Required if SOP Class UID is not "1.2.840.10008.5.1.4.1.1.4.4" (Legacy Converted). May be present otherwise.

Acquisition Contrast

(0008,9209)

Indication of acquisition contrast used with frames in the SOP Instance. See Section C.8.13.3.1.2 for a description and Defined Terms.

Required if SOP Class UID is not "1.2.840.10008.5.1.4.1.1.4.4" (Legacy Converted). May be present otherwise.

Functional Settling Phase Frames Present

(0018,9622)

Specifies if the acquisition used and stored settling phases.

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 representation 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 Module if frames within the image SOP Instance contain different values for the Complex Image 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.
UNKNOWN	Value should be UNKNOWN if acquisition contrasts were combined resulting in an unknown 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.

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