[Freesurfer] Feedback on Talairach QA and Q about segmentation in several atrophy

2008-04-30 Thread Damian Jenkins
Using the -notal-check flag after recon-all to bypass Talairach allowed us to 
reclaim several images for inclusion in a study containing MS patients with 
severe atrophy.

However, one image (which is nearly all ventricle!) is proving difficult to 
segment. The segmentation process parcels up bits of the ventricular space as 
thalamus and as caudate. Is there a way around this, or do images with very 
severe atrophy need to be excluded?

Dr Damian Jenkins
Department of Clinical Neurology
Oxford University

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Re: [Freesurfer] Feedback on Talairach QA and Q about segmentation in several atrophy

2008-04-30 Thread Bruce Fischl

Hi Damian,

if the ventricles are that huge and there's that much atrophy it probably 
won't work


Bruce
On Wed, 30 Apr 2008, Damian Jenkins wrote:


Using the -notal-check flag after recon-all to bypass Talairach allowed us to 
reclaim several images for inclusion in a study containing MS patients with 
severe atrophy.

However, one image (which is nearly all ventricle!) is proving difficult to 
segment. The segmentation process parcels up bits of the ventricular space as 
thalamus and as caudate. Is there a way around this, or do images with very 
severe atrophy need to be excluded?

Dr Damian Jenkins
Department of Clinical Neurology
Oxford University

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