8 Jun
2016
8 Jun
'16
11:03 a.m.
Greetings,
I have two questions regarding FS volume measurements.
I intend to use the volume information of .stats files but I got some doubts regarding the methods used.
1) I read that eTIV estimation is based on the TAL transformation, but what about the volumes of cortical and subcortical areas? Is it a simple voxel count?
2) In some studies the authors normalize the volumes to eTIV. In others the authors don't do any normalization. Some of them use it as co-variate. What's your opinion regarding this matter?
Thank you in advance!
Best regards,