MR DIFFUSION MACRO ATTRIBUTES (C.8.13-23)


Tag Attribute Type Description
(0018,9117)MR Diffusion Sequence1 Identifies the diffusion parameters of this frame. One Item shall be included in this sequence.
(0018,9087)>Diffusion b-value1C 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 Directionality1C 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 Sequence1C 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 Orientation1C 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 Type1C Class of diffusion anisotropy calculation. Defined Terms: FRACTIONAL RELATIVE VOLUME_RATIO Required if Frame Type (0008,9007) value 4 equals DIFFUSION_ANISO.




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