| (0018,9117) |
MR Diffusion Sequence |
1
|
Identifies the diffusion parameters of this frame. One Item shall be included in this sequence. |
| (0018,9087) |
>Diffusion b-value |
1C
|
Diffusion sensitization factor in sec/mm 2 . This is the actual b-value for original frames and those derived from frames with the same b-value, or the most representative b-value when derived from images with different b-values. Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
| (0018,9075) |
>Diffusion Directionality |
1C
|
Specifies whether diffusion conditions for the frame are directional, or isotropic with respect to direction. Defined Terms: DIRECTIONAL ISOTROPIC NONE = to be used when Frame Type (0008,9007) value 4 equals DIFFUSION_ANISO or Diffusion b-value (0018,9087) is 0 (zero). Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
| (0018,9076) |
>Diffusion Gradient Direction Sequence |
1C
|
Sequence containing orientations of all diffusion sensitization gradients that were applied during the preparation phase for this frame. Required if Diffusion Directionality (0018,9075) equals DIRECTIONAL |
| (0018,9089) |
>>Diffusion Gradient Orientation |
1C
|
The direction cosines of the diffusion gradient vector with respect to the patient Required if Frame Type (0008,9007) Value 1 of this frame is ORIGINAL. May be present otherwise. |
| (0018,9147) |
>Diffusion Anisotropy Type |
1C
|
Class of diffusion anisotropy calculation. Defined Terms: FRACTIONAL RELATIVE VOLUME_RATIO Required if Frame Type (0008,9007) value 4 equals DIFFUSION_ANISO. |