Hi Dorsa, please remember to include previous correspondence. I'm not sure what you are referring to, but when you reslice a volume, the size of the voxels usually changes so it is impossible to have exactly the same volume. Probably the original file is closest

Hi Bruce,

I was able to reslice the thalamus mask correctly, but when I measure the volume of the resliced thalamus, is not the same as the original thalamus. I was wondering why that is happening and which volume is more accurate. I appreciate any suggestions. I have attached both masks. Also can you tell me how to measure the volume of the resliced thalamus in Freesurfer?

Thank you

Dorsa

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