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MRIs enlarged by ACNS: (a) Volunteer1, (b) Volunteer2, (c) Volunteer3, and (d) Volunteer4 datasets. Each MRI was randomly selected. The first and second columns are the original MRIs magnified by nearest-neighbor interpolation and bicubic upsampling, and the third column is the resulting MRIs from ACNS, at a 
of 3. We magnified the area in the red square to show more details.
