In which year was computer X-ray photography successfully developed?

Computerized Radiography (CR) was successfully developed by VarianAssociates in the United States in 1972. The introduction of this technology has completely changed the traditional X-ray photography mode. Through digital processing and computer image reconstruction, the efficient collection, storage and analysis of X-ray images have been realized. The advent of this technology has brought great progress to the fields of medical image diagnosis and radiology, improved image quality, reduced radiation dose, and provided more flexible image post-processing and remote transmission capabilities.