National survey in diagnostic radiology inBulgaria 2007 – 2009
- Vassileva, R. Borisova, D. Stoyanov, A. Dimov, S. AvramovaCholakova, K. Ingilizova, D. Kostova-Lefterova, J. Hristova-Popova,I. Diakov, D. Taseva, D. Dosieva
National Centre of Radiobiology and Radiation Protection – Sofia
|The paper presents the current status of Diagnostic Radiology in Bulgaria. The total number of X-ray systems in 2009 is 2490, with 55.8 % contribution of conventional radiography and fluoroscopy systems, 25.5 % оf dental, 7.8 % of
computed tomography and 6.9 % of mammography systems.Old X-ray equipment still constitutes a considerable part of the total number, including also high dose CT and angiography systems. The paper presents analysis of results of a large scale national survey of patient doses in Diagnostic Radiology, performed in the period 2007 – 2009, which covered conventional radiography, mammography, fluoroscopy, including interventional radiology, and computed tomography. Variations in patient dose of up to 18 % were found between
departments for the same X-ray procedure. New national diagnostic reference levels for 17 X-ray procedures are presented. The total collective dose of the Bulgarian population was estimated to be 3191 man.Sv. Computed tomography has the highest contribution (30.1 %), followed by conventional radiography (27.3 %), fluoroscopy (20 %) and interventional radiology (9 %). The next national survey should be performed in 2013–2014. The assurance of quality diagnostics at minimum exposure of patients and staff should be of constant concern for the radiological society.
Key words: DIAGNOSTIC RADIOLOGY. NATIONAL SURVEY. DIAGNOSTIC
REFERENCE LEVELS. COLLECTIVE DOSE