Abdominal X-Ray Examinations — Conventional and Digital Techniques

Abstract

The value of digital radiography in abdominal x-ray examinations was investigated by comparing digital luminescent radiography (DLR) with conventional screen-film systems (CFS) and digital image intensifier radiography (DIR) with photofluorography (PF), respectively. In the first group (DLR/CFS) 403 matched conventional and digital abdominal examinations were obtained by CFS speed class 200 and DLR (PCR-SP, Philips). In the second group (DIR/PF) 92 conventional and digital barium and iodine meals were compared following the same schedule (Sircam 103/Polytron 1000, Siemens). In each digital technique two differently postprocessed images were obtained from one x-ray exposure. Conventional and digital images were evaluated randomly and seperately by 4 radiologist using a questionaire. DLR and DIR proved to be diagnostically equivalent to the conventional techniques. High spatial frequency enhancement (DLR) and displays in positive contrast (DIR) did not provide additional diagnostic information and should therefore be dispensed with in abdominal x-ray examinations.