Hi freesurfer team,
I'm hoping to ask two questions:
1. We are using the mri_volcluster command to find manually delineated clusters in a volume. In the output file, the command outputs Talairach coordinates for each cluster (TalX, TalY, TalZ). What do these coordinates exactly correspond to in terms of voxels? (i.e. do they reference the central voxel of each cluster, the first voxel detected, or something else)
2. Are there any freesurfer command(s) that can measure the minimum distance between two clusters in the same volume, or measure the minimum distance between one cluster in one volume( let's call it reference cluster) and multiple clusters in a second volume, granted that both volumes are in the same space and registered to each other (in other words, generate minimum distance measurements between all the clusters in the second volume and the reference cluster in the first volume).
My apologies if these questions are basic or have been asked before, but I haven't come across an answer on freesurfer forums or help files.
Best,
Omar
_____
Omar Al-Louzi, MD
PGY-3 Neurology resident
Massachusetts General Hospital
Brigham and Women's hospital
On 09/12/2017 03:50 PM, Omar Al-Louzi wrote:
Hi freesurfer team,
I’m hoping to ask two questions:
- We are using the mri_volcluster command to find manually delineated clusters in a volume. In the output file, the command outputs Talairach coordinates for each cluster (TalX, TalY, TalZ). What do these coordinates exactly correspond to in terms of voxels? (i.e. do they reference the central voxel of each cluster, the first voxel detected, or something else)
The location of the maximum in the cluster.
Are there any freesurfer command(s) that can measure the minimum distance between two clusters in the same volume, or measure the minimum distance between one cluster in one volume( let’s call it reference cluster) and multiple clusters in a second volume, granted that both volumes are in the same space and registered to each other (in other words, generate minimum distance measurements between all the clusters in the second volume and the reference cluster in the first volume).
No, sorry
My apologies if these questions are basic or have been asked before, but I haven’t come across an answer on freesurfer forums or help files.
Best,
Omar
Omar Al-Louzi, MD
PGY-3 Neurology resident
Massachusetts General Hospital
Brigham and Women’s hospital
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Omar Al-Louzi