Table C.8-92 specifies the attributes of the MR Modifier Functional Group Macro.
Table C.8-92. MR Modifier Macro Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
MR Modifier Sequence |
(0018,9115) |
1 |
Identifies general acquisition parameters of this frame. Only a single Item shall be included in this sequence. |
|
>Inversion Recovery |
(0018,9009) |
1C |
Inversion Recovery preparatory sequence. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
|
>Inversion Times |
(0018,9079) |
1C |
Times in ms after the middle of inverting RF pulse to middle of excitation pulse to detect the amount of longitudinal magnetization. Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Inversion Recovery (0018,9009) equals YES. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Inversion Recovery (0018,9009) equals YES. |
|
>Flow Compensation |
(0018,9010) |
1C |
Flow Compensation. Defined Terms:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
|
>Flow Compensation Direction |
(0018,9183) |
1C |
Flow Compensation Direction. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Flow Compensation (0018,9010) equals other than NONE. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Flow Compensation (0018,9010) equals other than NONE. |
|
>Spoiling |
(0018,9016) |
1C |
Spoiling. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Echo Pulse Sequence (0018,9008) equals GRADIENT or BOTH. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Echo Pulse Sequence (0018,9008) equals GRADIENT or BOTH. |
|
>T2 Preparation |
(0018,9021) |
1C |
T2 prepared Pulse Sequence. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
|
>Spectrally Selected Excitation |
(0018,9026) |
1C |
Spectrally Selected Excitation. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
|
>Spatial Pre-saturation |
(0018,9027) |
1C |
Spatial Pre-saturation. Defined Terms:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
|
>Partial Fourier |
(0018,9081) |
1C |
Partial Fourier. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
|
>Partial Fourier Direction |
(0018,9036) |
1C |
Direction of Partial Fourier. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Partial Fourier (0018,9081) equals YES. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Partial Fourier (0018,9081) equals YES. |
|
>Parallel Acquisition |
(0018,9077) |
1C |
Parallel acquisition has been used to reduce measurement time. Enumerated Values:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
|
>Parallel Acquisition Technique |
(0018,9078) |
1C |
Parallel acquisition characteristics. Defined Terms:
Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Parallel Acquisition (0018,9077) equals YES. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Parallel Acquisition (0018,9077) equals YES. |
|
>Parallel Reduction Factor In-plane |
(0018,9069) |
1C |
Measurement time reduction factor expressed as ratio of original and reduced measurement time for the in-plane direction. Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Parallel Acquisition (0018,9077) equals YES. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Parallel Acquisition (0018,9077) equals YES. |
|
>Parallel Reduction Factor out-of-plane |
(0018,9155) |
1C |
Measurement time reduction factor expressed as ratio of original and reduced measurement time for the out-of-plane direction Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Parallel Acquisition (0018,9077) equals YES. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Parallel Acquisition (0018,9077) equals YES. |
|
>Parallel Reduction Factor Second In-plane |
(0018,9168) |
1C |
Measurement time reduction factor expressed as ratio of original and reduced measurement time for the second in-plane direction. Only required for MR Spectroscopy SOP Instances. Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Parallel Acquisition (0018,9077) equals YES. Otherwise may be present if Frame Type (0008,9007) Value 1 is DERIVED and Parallel Acquisition (0018,9077) equals YES. |