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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
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