A Performance Evaluation of Diagnostic X-ray Unit Depends on the Hospitals Size

병원 규모별 진단용 X선 발생장치의 성능 평가

  • Park, Ju-Hun (Department of Radiological Science, Kaya University) ;
  • Im, In-Chul (Department of Radiological Science, Kaya University) ;
  • Dong, Kyung-Rae (Department of Radiological Technology, Gwangju Health College University) ;
  • Kang, Se-Sik (Department of Radiological Science, College of Health Science, Catholic University of Pusan)
  • 박주훈 (가야대학교 방사선학과) ;
  • 임인철 (가야대학교 방사선학과) ;
  • 동경래 (광주보건대학 방사선과) ;
  • 강세식 (부산카톨릭대학교 방사선학과)
  • Published : 2009.03.30

Abstract

The purpose of this study is to measure the tube voltage, the tube current/volume, exposure time and exposure dose of diagnostic X-ray unit in each doctor offices, hospitals and general hospitals for evaluating the performance of such device, to learn the method and technology of its measurement and to suggest its importance. Research subjects were total 30 X-ray units and divided into groups of 10 X-ray units each. The tube voltage, the tube current/volume, exposure time and exposure dose were measured using percentage average error, and then reproducibility of exposure dose was measured through calculating coefficient of variation. The results are like followings; The tube voltage correctness examination showed that incongruent devices among total 30 X-ray units were 5 devices (16.7%). The tube current correctness examination showed that incongruent X-ray units were 3 devices (10.0%). The tube current volume correctness examination showed that incongruent X-ray units were 4 devices (13.3%). Finally, according to exposure time correctness examination, incongruent X-ray units were 5 devices (16.7%) and according to reproducibility examination of exposure dose, incongruent X-ray units were 7 devices (23.3%). Above results showed serious problem in performance management based on management regulation of diagnostic X-ray unit; it means that regular checkout and safety management are required, and as doing so, patients will be able to receive good quality of medical service by the reduction of radiation exposure time, image quality administration, unnecessary retake and etc. Therefore, this study suggests that the performance of diagnostic X-ray units should be checked regularly.

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