Imaging technologies like positron emission tomography (PET) and computed tomography (CT) can be combined for better diagnosis, according to Dr marcelo F.dicarli, associate professor of radiology at harvard medical school.

PET is a functional device, while CT is an analytical device. This combination helps clinicians to identify, measure and anlayse the problems be ability of machines that combine the two technologies made the things easier . Many application software used in PET/CT combo have been developed.