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...

maxillary sinus aplasia and hypoplasia are rare conditions that can cause symptoms such as headaches and voice alteration. the majority of patients are asymptomatic, but these conditions must be noticed for importance of differential diagnosis such as infection and neoplasms. conventional radiographs could not differentiate between infl ammatory mucosal thickening, neoplasm, and hypoplasia of t...