A method for diagnosing Alzheimer's disease using a PET-CT image according to the present invention may comprise: a step for creating a standard brain CT template in the Montreal Neurological Institute (MNI) space on the basis of a CT image obtained from a PET-CT apparatus; a step for calculating, on the basis of the standard brain CT template, a whole cortex volume of interest (VOI) of a plurality of subregions which can be used in common for 18F-florbetaben (FBB) and 18F-flutemetamol (FMM) in a cortex ROI region having at least a certain value of beta-amyloid protein deposits; and a step for calculating the centiloid of each of the plurality of subregions on the basis of the amyloid Standardized uptake value ratio (SUVR) of each of the plurality of subregions.
METHOD FOR DIAGNOSING ALZHEIMER'S DISEASE USING PET-CE IMAGE AND APPARATUS THEREOF