title: High-tech scan reveals protein in the brain linked to Alzheimer's disease. A special form of PET scanning offers a more certain diagnosis for some, but at a steep out-of-pocket cost.
mesh_terms: D000544:Alzheimer Disease / Q000000981:diagnostic imaging* / Q000191:economics*; D042241:Early Diagnosis; D006801:Humans; D008297:Male; D058225:Plaque, Amyloid / Q000000981:diagnostic imaging* / Q000191:economics*; D049268:Positron-Emission Tomography / Q000191:economics* / Q000379:methods