title: Rapid rate of decline in cerebral blood flow in progressive dementias.
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000000981:diagnostic imaging*; D002560:Cerebrovascular Circulation; D003704:Dementia / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D014980:Xenon Radioisotopes
chemical_list: D014980:Xenon Radioisotopes