title: [Brain atrophy during aging--a quantitative study with X-ray computerized tomography (X-CT), nuclear magnetic resonance (NMR-CT) and positron emission tomography (PET)].
mesh_terms: D000328:Adult; D000368:Aged; D001284:Atrophy / Q000175:diagnosis; D001921:Brain / Q000473:pathology*; D005260:Female; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008875:Middle Aged; D014055:Tomography, Emission-Computed; D014057:Tomography, X-Ray Computed