X-RAY-EXPOSURE OF RADIOLOGISTS AND STAFF IN INTERVENTIONAL RADIOLOGY

The surface dose at five typical positions around the patient couch wa s measured during transjugular intrahepatic portosystemic stent shunt (TIPSS) interventions for retrospective calculation of staff dose. Add itionally, the surface dose was measured on three members of staff (tw o radiologists and one technician) by placing thermoluminescence (TL) dosimeters directly on the eyebrows, thyroid, sternum, gonads, hands, knees, and feet, The measured surface dose values and the TL dosimeter measurements are used for estimation of effective dose per examinatio n received by personnel. The effective dose for the radiologists is ca lculated to 25-35 mu Sv. The maximum number of examinations allowed pe r year is calculated on the basis of a given yearly dose limit, by loo king at organ dose and effective body dose.