Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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Patient Exposure Dose Reduction in Coronary Angiography & Intervention

심혈관조영술 및 중재술 시 환자 선량 감소방안

  • Lim, Do-Hyung (Department of Cardiovascular Center, The Cathoilc University of Korea, Incheon St. Mary's Hospital) ;
  • Ahn, Sung-Min (Department of Radiological Science, Gachon University)
  • 임도형 (가톨릭대학교 인천성모병원 심혈관촬영실) ;
  • 안성민 (가천대학교 방사선학과)
  • Received : 2022.01.18
  • Accepted : 2022.02.04
  • Published : 2022.02.28
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Abstract

This study, the method of reducing the exposure dose by changing the geometrical requirements among the preceding studies and the method of directly wearing a protector on the patient were used to expose the patient. A comparative experiment was conducted on the method of reducing the dose and the most effective method for reducing the exposure dose was investigated. Using the phantom, the dose of the lens, thyroid gland, and gonad gland in the 5 views most used in coronary angiography and intervention accumulated 5 times for 10 seconds at 60~70 kV, 200~250 mA as an automatic controller of the angiography system, and measured by Optically Stimulated Luminescent Dosimeter(OSLD). SID 100 cm and Cine 15 f/s as a control group the experiment was conducted by dividing the experimental group into 3 groups: a group lowered to Cine 7.5 f/s, a phantom protector, and a group lowered to 95 cm SID. As a result of the experiment, showing decrease in exposure dose compared to the control group. Lowering the cine frame may be the simplest and most effective method to reduce the exposure dose, but there is a limit that it cannot be applied if the operator judges that the diagnostic value is small or feels uncomfortable with the procedure. Conclusion as fallow reducing the exposure dose by directly wearing protector is the next best solution, and it is hoped that the conclusions obtained through this study will help reduce the exposure dose to unnecessary organ.

Keywords

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