X-ray computed tomography (CT) can reveal the internal details of objects in three dimensions non-destructively. In this Primer, we outline basic principles CT and describe ways which a scan be acquired using tubes synchrotron sources, including different possible contrast modes that exploited. We explain process computationally reconstructing three-dimensional (3D) images from 2D radiographs h...

Computed tomography (CT) uses thousands of x-ray transmission measurements taken at different angles around a patient to produce three-dimensional cross-sectional images the human body. That technology allows physicians visualize their patients’ internal anatomy, as shown in opening image, and reveals presence acute chronic diseases consequences injury remarkable detail. Prior integration CT in...

I would like to add a historical footnote the excellent article by John Boone and Cynthia McCollough in September 2021 issue of Physics Today (page 34). The origins computed tomography (CT) can be traced William Oldendorf’s pioneering work late 1950s 1960s. Oldendorf was professor neurology at UCLA School Medicine when he developed prototype an automated tomographic device which used his son’s ...

Background and Aim: Bone density is of great assistance in the selection of the proper implant site. The present study aimed to assess the correlation between tissue densities in computed tomography (CT) and three different cone-beam computed tomography (CBCT) units. Materials and Methods: In this descriptive study, a radiographic phantom consisting of a transparent polymethyl methacrylate (PM...

We report on a rare case of a laryngeal carcinoma arising in a multifocal pharyngolaryngeal oncocytic papillary cystadenoma (OPC). The disease of a 63-year-old man is well documented by computed and positron emission tomography, histology, and electron microscopy. We could show that an OPC can even develop in the pharynx. The coexistence of both tumors makes this a challenging diagnosis for pat...