The aim of this study is to investigate the feasibility of eliminating the nephrographic phase from the four-phase renal computed tomography (CT) imaging to a three-phase protocol without affecting its diagnostic value. Thirty patients undergoing four-phase renal CT scans for assessment of renal lesions (>10 mm) were included in the study. A three-phase renal CT, without nephrographic phase, ha...

CONTEXT Accessory mental foramen is a rare anatomical variation. Even so, in order to avoid neurovascular complications, particular attention should be paid to the possible occurrence of one or more accessory mental foramen during surgical procedures involving the mandible. CASE REPORT A 3-dimensional computed tomography (3D-CT) scan of a female patient revealed an accessory mental foramen on...

Almost 30 years have passed since the initial publication of Ivan Illich’s Limits to Medicine. Medical Nemesis: The Expropriation of Health. A medieval historian who has been described as one of the world’s great thinkers, Illich introduced his iconoclastic work with the indictment, “the medical establishment has become a major threat to health.” The book makes a passing reference to radiology ...

BACKGROUND Japan has the most CT and MRI scanners per unit population in the world; however, the geographic distribution of these technologies is currently unknown. Moreover, nothing is known of the cause-effect relationship between the number of diagnostic imaging devices and their geographic distribution. METHODS Data on the number of CT, MRI and PET devices and that of their utilizations i...