Hi René

our volume calculation corrects for partial volume effects, so it does more than just counting voxels. cheers Bruce On Thu, 25 Apr 2019, Schranzer René wrote:

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Hello FreeSurfer Developers,

I was wondering about the volume calculation of the structures in the aseg.stats file.

VoxelVolume_mm3 0.512

NVoxels 8616    Volume_mm3  4312.4  StructName Right-Hippocampus

After my calculation of NVoxels * VoxelVolume I get a slightly different value.

0.512*8616 = 4411.4

Where does the difference come from?

Thanks,

René