Anterior Limb of the Internal Capsule – aic

Protocol PDF Document (version 1.2): aicScreen Shot 2018-06-27 at 1.09.53 PM

Instructions:

  1. Create two separate coronal seed regions (at approx. coronal slice 71), one for each side.
  1. Create an ROA region and draw a sagittal ROA slice at the midline (at approx. sagittal slice 78).
  1. Check the left seed/ROI regions and ROA region, then run fiber tracking. Based on this output, ROA placement will be clearer.

aic2

  1. Using the same ROA file, draw three more ROA regions:
      1. on a coronal slice posterior to the seed regions (at approx. coronal slice 110)
      2. on an axial slice inferior and superior to the seed region (at approx. coronal slice 64 & 104)
      3. on the same coronal slices as the seed regions (at approx. coronal slice 71). Cover the entire slice then erase around the seed/ROI regions from step #3.
  1. In the region list, check only the left seed region and ROA regions, then perform fiber tracking. Under the tract list, make sure only the desired left tract is checked and highlighted in purple. Save regions, tracts, and density files. Once it is saved, delete the left tract.
  1. In the region list, uncheck the left seed region, check the right seed region and ROA region, then perform fiber tracking. Under the tract list, make sure only the desired right tract is checked and highlighted in purple. Save the right regions, tracts, and density files.
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1 Response to Anterior Limb of the Internal Capsule – aic

  1. Cailey Kerley says:

    This protocol doesn’t specify that the axial ROAs shouldn’t be full slice ROAs. In the picture at the top of this protocol though, the axial ROAs are smaller, allowing the fibers to fan out towards the top of the cortex, which seems important for this bundle. It would be helpful to make a note of this in the protocol text.

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