Upsampled simulated healthy N-acetylaspartate (NAA) and
D-2-hydroxyglutarate (D-2HG) metabolite maps. From left to right, images
were obtained with high-resolution T1-weighted MRI (matrix, 138 ×
138 × 40) magnetization-prepared rapid gradient-echo (MPRAGE) and
high-resolution (HR) (matrix, 138 × 138 × 40; ground truth),
low-resolution (LR) (matrix, 46 × 46 × 10), and
super-resolution (SR) (matrix, 138 × 138 × 40) MR
spectroscopy.