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[en] The purpose of the study was to apply European Commission (EC) Reference Dose Levels (RDL) in Computed Tomography (CT) examinations at Onassis Cardiac Surgery Center (OCSC). These are weighted CT Dose Index (CTDIw ) for a single slice and Dose-Length Product (DLP) for a complete examination. During the period 1998-1999, the total number of CT examinations, every type of CT examination, patient related data and technical parameters of the examinations were recorded. The most frequent examinations were chosen for investigation which were the head, chest, abdomen and pelvis. CTDI measurements were performed and CTDIw and DLP were calculated. Third Quartile values of CTDIw were chosen to be 43mGy for head, 8mGy for chest, and 22mGy for abdomen and pelvis examinations. Third quartile values of DLP were chosen to be 740mGycm for head, 370mGycm for chest, 490mGycm for abdomen and 420mGycm for pelvis examination. Results confirm that OCSC follows successfully the proposed RDL for the head, chest, abdomen and pelvis examinations in terms of radiation dose. (author)
Source
International Atomic Energy Agency, Vienna (Austria); European Commission, Brussels (Belgium); Pan American Health Organization, Washington, DC (United States); World Health Organization, Geneva (Switzerland); 916 p; Mar 2001; p. 228-232; International conference on radiological protection of patients in diagnostic and interventional radiology, nuclear medicine and radiotherapy; Malaga (Spain); 26-30 Mar 2001; IAEA-CN--85-203; ISSN 1563-0153; 
; 7 refs, 5 tabs
; 7 refs, 5 tabs