DTI:DTI54vs6

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Revision as of 19:10, 11 June 2024 by Jblocher (talk | contribs) (Created page with "== DTI comparison between the 5x6 directional and the single 54 directional DTI sequence == * 54 directional sequence observations ** single base line image *** if corrupt, whole sequence is lost, one example thus far *** bad signal to noise on baseline as compared to 5x6 protocol, suggestion add 5-6 additional baseline scans ** nearly every case has motion or interslice brightness differences that needs for individual directions to be discarded (same problem for 6 dire...")
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DTI comparison between the 5x6 directional and the single 54 directional DTI sequence

  • 54 directional sequence observations
    • single base line image
      • if corrupt, whole sequence is lost, one example thus far
      • bad signal to noise on baseline as compared to 5x6 protocol, suggestion add 5-6 additional baseline scans
    • nearly every case has motion or interslice brightness differences that needs for individual directions to be discarded (same problem for 6 directional cases)
    • for large 2 year olds, not full brain coverage, cropped superior regions as well as cerebellum
    • coverage thus not appropriate, cannot be used right now for 2 year olds, only for neonates and 1 year old (barely fit into the coverage).
  • difference to 6 directional protocol
    • local difference in FA and MD estimation
    • tractography difference
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