title: [Study of progression of amyotrophic lateral sclerosis by proton magnetic resonance spectroscopy].
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000378:metabolism / Q000473:pathology*; D001921:Brain / Q000378:metabolism / Q000473:pathology; D006801:Humans; D009682:Magnetic Resonance Spectroscopy