Evolution of computed tomography techniques

Recently, computed tomography (CT) scanners, which combine X-rays and computers, have been developed and adopted globally as diagnostic tools. We found it necessary to chronicle the development of CT technology and identify the factors of their widespread application and the sequence of introduction and adoption of installed optical equipment, including the events that caused the advancement of these technologies and their impact on medical services. The twentieth century was full of scientific events and a wealth of information available to scientists and innovators worldwide, challenging the restrictions imposed on the space for technology transfer and the sharing of science and information that may limit coverage. Developments in emerging inventions and innovations. Through this paper, we review the main CT techniques developed. This work focuses on hardware and systematic evolution following the timeline associated with innovations that have contributed to image reconstruction technology.