J Radiat Prot > Volume 35(1);2010 > Article
 1차 의료기관의 엑스선 발생장치 정도관리에 관한 현황조사:광주광역시 지역을 중심으로 동경래;이선주;권대철;구은회;정재은;이규수; Actual Condition of Quality Control of X-ray Imaging System in Primary Care Institution: focused on Gwangju Metropolitan City Dong, Kyung-Rae;Lee, Seun-Joo;Kweon, Dae-Cheol;Goo, Eun-Hoe;Jung, Jae-Eun;Lee, Kyu-Su; ABSTRACT With the expanded use of radiation in modern medical practices, the most important issue in regards to efforts to reduce individual exposure dose is quality assurance. Therefore in order to study the present condition of quality assurance, the Gwangju Metropolitan City area was divided into five districts each containing ten hospitals. Four experiments were conducted: a reproducibility experiment for kVp, mA, and examination time (sec) intensity of illumination; half-value layer (HVL) measurement; and beam perpendicularity test matching experiment. The tube voltage reproducibility experiment for all fifty hospitals resulted in a 95.33% passing rate and mA and examination time both resulted in a 77.0% passing rate. The passing rate for intensity of illumination was 86.0% and 52.0% for HVL, which was the lowest passing rate of all four factors. For the beam perpendicularity test matching experiment, generally the central flux is matched to within $1.5^{circ}$. Of all fifty hospitals 30.0% were beyond $3^{circ}$. The results of the survey showed that 58% responded that they knew about quality assurance cycle. All fifty respondents stated that they have not received any training in regards to quality assurance at their current place of employment. Although quality assurance is making relative progress, the most urgent issue is awareness of the importance of quality assurance. Therefore, the implementation of professional training focusing on safety management and accurate quality assurance of radiation will reduce the exposure to radiation for radiologists and patients and higher quality imaging using less dosage will also be possible.
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