RESUMO
This study was conducted to assess the repeat film rate and major causes of artefacts, which are major sources of unnecessary patient irradiation in a radiology department. In this study a total number of 2542 x-ray examination were carried out in a period of six months. Out of this, 81 patients were re-examined due to unacceptable results. To avoid repeat film and unnecessary patient irradiation, aggressive quality control program must be instituted in radiology departments. This includes equipment procurement and maintenance, proper reception, procurement and maintenance, proper reception, preparation and registration of patients, expertise of radiographers and efficient processing procedures. Repeat rate estimation on quarterly basis is an important requirement of quality control program