Hoping somebody can give me some real world numbers on the typical capabilities of 3T and 7T MRI machines in terms of there minimum voxel size (specifically in relation to there use in fMRI studies if that makes a difference)? The Wikipedia article on MRI gives a rather non committal range of 1mm to 5mm on a side, but I have been reading the term High-Resolution fMRI in a few places without any qualification being placed on it.


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