Difference between revisions of "Projects/Diffusion/2007 Project Week Contrasting Tractography Measures/ROI Definitions"
Line 10: | Line 10: | ||
ROI 1) find anterior commisure on axial view and draw ROI on coronal slice on each side on midsag line | ROI 1) find anterior commisure on axial view and draw ROI on coronal slice on each side on midsag line | ||
− | [[Image:IC_axial.png|thumb|left|300px|Axial View of the Anterior Commisure, which serves as the bottom boundary of ROI 1]] | + | [[Image:IC_axial.png|thumb|left|300px|Axial View of the Anterior Commisure, which serves as the bottom boundary of ROI 1]] |
|- | |- | ||
Line 17: | Line 17: | ||
<p>Top boundary for ROI 1: Caudate/putamen line</p> | <p>Top boundary for ROI 1: Caudate/putamen line</p> | ||
<p>Bottom boundary for ROI 1: draw entire plane of AC; IC is only superior to AC line.</p> | <p>Bottom boundary for ROI 1: draw entire plane of AC; IC is only superior to AC line.</p> | ||
+ | |||
+ | [[Image:IC_ROI1.png|thumb|left|300px|Coronal View of ROI 1 (left and right), showing the inferior boundary (in purple)]] | ||
+ | |||
+ | |- | ||
+ | | | ||
+ | |||
<p>ROI 2) go to the anterior most point of the corpus collosum according to saggital view. Draw ROI so it covers entire (left or right) hemisphere of brain on the perpendicular Coronal Slice.</p> | <p>ROI 2) go to the anterior most point of the corpus collosum according to saggital view. Draw ROI so it covers entire (left or right) hemisphere of brain on the perpendicular Coronal Slice.</p> | ||
Line 26: | Line 32: | ||
: | : | ||
::15= Inferior Boundary... do not track from this. | ::15= Inferior Boundary... do not track from this. | ||
− | [[Image:InternalCapsuleROIs.png|thumb|left|300px|Internal Capsule ROI's 1 and 2 (left)]] | + | [[Image:InternalCapsuleROIs.png|thumb|left|300px|Internal Capsule ROI's 1 and 2 (left)]] |
|- | |- |
Revision as of 14:21, 27 July 2007
Home < Projects < Diffusion < 2007 Project Week Contrasting Tractography Measures < ROI DefinitionsContents
Boundaries for the ROI's, mainly using FA maps & color by orientation, followed by the color coding of the labelmaps.
This page describes the definition of the regions of interest for five fiber bundles: the Internal Capsule, the Uncinate Fasciculus, the Fornix, the Arcuate Fasciculus and the Cingulum Bundle. IC - Internal CapsuleROI 1) find anterior commisure on axial view and draw ROI on coronal slice on each side on midsag line |
Top boundary for ROI 1: Caudate/putamen line Bottom boundary for ROI 1: draw entire plane of AC; IC is only superior to AC line. |
ROI 2) go to the anterior most point of the corpus collosum according to saggital view. Draw ROI so it covers entire (left or right) hemisphere of brain on the perpendicular Coronal Slice.
|
unc - Uncinate FasciculusFind the most prominant (central) slice of the fornix according to saggital view. Go one slice anterior to the most anterior point of the fornix and draw Left and Right ROI 1 and ROI 2.
|
FornixROI 1) on Coronal view, the first slice where the middle cerebellar peduncles are present ROI 2) posterior to ROI 1; large blobs drawn on coronal view where the middle cerebellar peduncle is clearly connected at bottom of slice
|
Arcuate FasciculusThese labelmaps ('caseD00XXX-FS-arcuate-final.nhdr') were created using automatic gray matter parcellation in Freesurfer and coregistered in Slicer to corresponding DTI dataset. The labelmaps were dilated in Slicer to increase coverage of gray matter.
|
Cingulum BundleROI 1) on the superior side of the corpus, flush with the most anterior part of the corpus (based on sag view, but drawn on coronal view) ROI 2) on the first coronal slice where the L & R corpus connect, on the superior side of the corpus. ROI 3) on the first coronal slice where the L & R corpus connect, on the inferior side of the corpus. ROI 4) on the first coronal slice where the middle cerebellar peduncle is present.
|
Return to Contrasting Tractography Project page