A 
system and method for building and / or manipulating a centralized medical image quantitative information 
database aid in diagnosing diseases, identifying 
prevalence of diseases, and analyzing market penetration data and 
efficacy of different drugs. In one embodiment, the diseases are bone-related, such as 
osteoporosis and 
osteoarthritis. Subjects' medical images, personal and treatment information are obtained at information collection terminals, for example, at medical and / or dental facilities, and are transferred to a 
central database, either directly or through a 
system server. Quantitative information is derived from the medical images, and stored in a 
central database, associated with subjects' personal and treatment information. Authorized users, such as medical officials and / or pharmaceutical companies, can access the 
database, either directly or through the central 
server, to diagnose diseases and perform 
statistical analysis on the stored data. Decisions can be made regarding marketing of drugs for treating the diseases in question, based on analysis of 
efficacy, market penetration, and performance of competitive drugs.