PATIENT DOSE SURVEYS FOR RADIOLOGICAL EXAMINATIONS IN DUTCH HOSPITALS BETWEEN 1993 AND 2000

摘要

Our inventory studies on radiation dose to patients in Dutch hospitals are reviewed and compared with currentrnEuropean guidelines on patient dose and reference dose values of the NRPB. Between the years 1993 and 2000rndoses were measured and effective dose was assessed at 14 hospitals for paediatric radiography, at 18 hospitalsrnfor PA chest radiography, at 10 respectively 9 hospitals for barium meal and barium enema examinations and atrn18 hospitals for CT scans of the brain, chest (including high resolution CT of the chest), abdomen and lumbarrnspine in The Netherlands.rnEffective doses varied from 1 μSv (AP chest radiograph premature) to 26 mSv (CT abdomen scan). Doses werernin general well below the reference dose values, with the exception of CT where the dose length product oftenrnexceeded reference levels. Interhospital variations were considerable, the largest range was observed for PA chestrnexaminations, I.e. a ratio of 27 between maximum and minimum effective dose.