"DWI: in both neonates and older children areas of restricted diffusion in affected regions 2"
"NAA level: decreased"
"Long-term treatment of propionic acidaemia is a low protein diet (especially low in the offending amino acids; e.g. valine) to reduce the formation of propionic acid in the body 1. Liver transplantation may be required in some cases where despite dietary modification recurrent episodes of metabolic decompensation still occur 5."