DIGITAL TECHNOLOGY INFLUENCE ON PATIENT DOSE IN THERADIOLOGICAL EXAMINATION OF THE UPPER DIGESTIVE APPARATUS

摘要

The radiological study of the superior digestive apparatus (oesophagus, stomach and duodenum) throughout thernbarium contrast is a kind of exploration which provides medium-high dosage levels for patients. In these studiesrnthe fluoroscopy and the acquisition of images for the diagnosis are shared. The acquisition of images, up until arnfew years ago, was accomplished through radiographic film and chemical processing; nowadays, the newrngeneration of image-intensifier tube incorporates a new utility to digitally capture the images.rnThis new capturing method, with higher sensitivity, allows us to obtain images with a mAs 5 times smaller thanrnthe classical system of radiological film (reduction of the dosage up to 80%). This leads us to expect veryrnimportant reductions in dosage in the studies conducted with this new technology. Nonetheless, thesernexpectations haven't been reflected in the dosimetric samples that our work team has conducted in several centersrnof the community of Madrid these past years. In this work, the reasons of this phenomenum are analyzed.