4 Apr
2022
4 Apr
'22
10:39 a.m.
That's so weird. Can you make the data available to us?
On 3/29/2022 8:00 AM, Samuel Paré wrote:
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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? Thanks, Samuel image.png -- *Samuel Paré, MSc* Laboratoire du développement et plasticité du système visuel École d'optométrie Université de Montréal _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu *MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be* https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer <https://secure-web.cisco.com/1Js5RYkF9g9o-TCQiLwHtezjqoE_SjgaOLPtPqH7T07AInOANzncfH2EL1ydhUgEvP1AjUlQOkCMgWi34epgPlAog5D0bBAQmWAOL1sMFeE5NFk7H9YQgAdNDKn8Wuqd2j3Jyz0dqI0roZWyKucvttXkj4ozp2NbcB3z98C0_Mm-tIdvdIjH3t1fxnlEbw-p6OpXpORjBLy6YgUOFpKjDbwZ4erLTrwFozrOJ3_RIb8K8bG4gPa0JYQ2raxD4ErlJjFu8alnp6D8DCkf_gK6sunf1rEngI2BbxOhTaOrzcfzUxORhFXwZskVlWxrzA6ec5XA0ZKJlJy2TDBYv4rDaTg/https%3A%2F%2Fmail.nmr.mgh.harvard.edu%2Fmailman%2Flistinfo%2Ffreesurfer>_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu *MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be* https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer <https://secure-web.cisco.com/1Js5RYkF9g9o-TCQiLwHtezjqoE_SjgaOLPtPqH7T07AInOANzncfH2EL1ydhUgEvP1AjUlQOkCMgWi34epgPlAog5D0bBAQmWAOL1sMFeE5NFk7H9YQgAdNDKn8Wuqd2j3Jyz0dqI0roZWyKucvttXkj4ozp2NbcB3z98C0_Mm-tIdvdIjH3t1fxnlEbw-p6OpXpORjBLy6YgUOFpKjDbwZ4erLTrwFozrOJ3_RIb8K8bG4gPa0JYQ2raxD4ErlJjFu8alnp6D8DCkf_gK6sunf1rEngI2BbxOhTaOrzcfzUxORhFXwZskVlWxrzA6ec5XA0ZKJlJy2TDBYv4rDaTg/https%3A%2F%2Fmail.nmr.mgh.harvard.edu%2Fmailman%2Flistinfo%2Ffreesurfer> The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Mass General Brigham Compliance HelpLine at *MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be* https://www.massgeneralbrigham.org/complianceline <https://secure-web.cisco.com/1JXdd6MYX-VQtezfpq-dNMmmZAXsMbDaE4p6OdadfpU9gWv52sHDXpQvdYQc6WerTWhCM6AjFO1SvI4wynGCMC85riKw5-mNG3IqFw11ja7tg3g074vG8yvLWQzI-4t7z_EBOIgBnmc9eMTtASnV1lX4lVTcNIaD3-OKl8gzmHCmwI9dltuSmgHAeFjGTZis5rhLuycTz7PBzgHpU6bkTEKv4k5DbvUSB8taytPhBPBqNrbUMJG_kVBznd9rf9pzgY1rVD4pbgJ4ycoAW0Oj0uMHXPbli1BO5wvL10O6SZLsp_0NCg_zAxCYvdNy9uhv-NCIptgoMHVv77tuX0aG6Rg/https%3A%2F%2Fwww.massgeneralbrigham.org%2Fcomplianceline> <*MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be* https://www.massgeneralbrigham.org/complianceline <https://secure-web.cisco.com/1JXdd6MYX-VQtezfpq-dNMmmZAXsMbDaE4p6OdadfpU9gWv52sHDXpQvdYQc6WerTWhCM6AjFO1SvI4wynGCMC85riKw5-mNG3IqFw11ja7tg3g074vG8yvLWQzI-4t7z_EBOIgBnmc9eMTtASnV1lX4lVTcNIaD3-OKl8gzmHCmwI9dltuSmgHAeFjGTZis5rhLuycTz7PBzgHpU6bkTEKv4k5DbvUSB8taytPhBPBqNrbUMJG_kVBznd9rf9pzgY1rVD4pbgJ4ycoAW0Oj0uMHXPbli1BO5wvL10O6SZLsp_0NCg_zAxCYvdNy9uhv-NCIptgoMHVv77tuX0aG6Rg/https%3A%2F%2Fwww.massgeneralbrigham.org%2Fcomplianceline>> . Please note that this e-mail is not secure (encrypted). If you do not wish to continue communication over unencrypted e-mail, please notify the sender of this message immediately. Continuing to send or respond to e-mail after receiving this message means you understand and accept this risk and wish to continue to communicate over unencrypted e-mail.-- *Samuel Paré, MSc* Laboratoire du développement et plasticité du système visuel École d'optométrie Université de Montréal
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