26 Apr
2022
26 Apr
'22
2:06 p.m.
sorry, just looking at it now. Can you send the 1mm results as well?
On 4/25/2022 7:42 PM, Samuel Paré wrote:
External Email - Use Caution
Hi,
I was wondering if you had new information on this matter.
Thank you very much, Samuel
On Tue, Apr 5, 2022 at 9:04 AM Samuel Paré pare.samuel19@gmail.com wrote:
B15.zip <https://secure-web.cisco.com/1d2-h6246ghO1ZWMP33mOl8JR3DNWRGoJVMDMShomFlz3LhGlhOAjOxmLYC9J9wJJbmRKCn70sZPPUxkFnhrqnHTucHKGpQRg24MWiM5SVfBBAQyyYdF1kpdaSDQ5H4T7Ouqez8zZ1EHGeGBvfRc-3J3B1-w0HLm2oEkM1Yi2i0KgY0c2ctSRFjTktX9efnlsVWnl4SwlnJds_B_bjgcg-eEgJ-yb0n7wVU4fIM4ZRDuzZ72FjVEEr8Yq6jsvN0d5uIl0i9CJX7G0m6UsgEVd_S1oRQWhZfusM1T8ciErowlYibCRhJHRpBHi6sdXtT4rfPu8SZg5sp0ckDlmEsQx9rqXHEFJd6duhfoswRVZD7U/https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1CatLZC5ca1Q4CvfSzXB3MMC62f6vNnXX%2Fview%3Fusp%3Ddrive_web> Hi Douglas, Thank you again for your help. Here is one subject, let me know if you need more. Kind regards, Samuel On Mon, Apr 4, 2022 at 10:40 AM Douglas N. Greve <dgreve@mgh.harvard.edu> wrote: That's so weird. Can you make the data available to us? On 3/29/2022 8:00 AM, Samuel Paré wrote:External Email - Use Caution Hi Dough, Thanks for your response. We followed your suggestion and ran the 7T data without the -highres option. This gave us values which are in the normal range of what we get when using 3T mean curvature data. We looked whether there was a fixed scaling factor between the data with and without the -highres option. This did not seem to be the case as the scaling factor for the different subregions varied between 1,18 (for the left G_subcallosal) and 2,95 (for the left S_collat_transv_ant). I attached a pdf with the results. Thank you again On Sun, Mar 27, 2022 at 5:31 PM Douglas N. Greve <dgreve@mgh.harvard.edu> wrote: 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:External Email - Use Caution 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? 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