This does not make sense to me. What resolution is your 3T and 7T data? Can you run the 7T data at 1mm (ie, without the -hires option) and see if it changes?

On 3/20/2022 9:42 AM, Samuel Paré wrote:

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Hello,

 

We are looking at some of our data acquired on a 7T magnet. We ran recon-all with the “highres” flag. The obtained results for cortical thickness and cortical volume are very comparable to data that we obtain when using 3 T brain images. However, the results for cortical curvature are significantly different from what we get by our 3 T data. I attach the output of mean cortical curvature values using the Destrieux atlas for a 3T and 7T dataset on healthy controls. As you can notice, they differ roughly by a factor of 2. Any explanation for what may cause this large difference?

 

Thanks,

 

Samuel


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Samuel Paré, MSc
Laboratoire du développement et plasticité du système visuel
École d'optométrie
Université de Montréal 



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