Dear Freesurfer people,
We posted this question before, but maybe you missed it. We have a question regarding the relationship between cortical volume, cortical area and cortical thickness measurements derived from the parcellation stat-file. We were under the impression that the volume is equal to the area*thickness. However, this is not the case. Can you tell us how these three measurements relate to each other? Thanks for your help!
Kind regards,
Marise Machielsen & Laura Koenders
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AMC Disclaimer : http://www.amc.nl/disclaimer
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Hi Masise and Laura, yes, it is area*thickness, but area*thick is computed on a vertex-by-vertex basis, then summed over vertices. This is not the same as summing the area and multiplying it by the mean of the thickness. doug
On 10/23/2012 06:52 AM, L. Koenders wrote:
Dear Freesurfer people,
We posted this question before, but maybe you missed it. We have a question regarding the relationship between cortical volume, cortical area and cortical thickness measurements derived from the parcellation stat-file. We were under the impression that the volume is equal to the area*thickness. However, this is not the case. Can you tell us how these three measurements relate to each other? Thanks for your help!
Kind regards,
Marise Machielsen& Laura Koenders
AMC Disclaimer : http://www.amc.nl/disclaimer
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-
Douglas N Greve -
L. Koenders