Effect of exposure angulation on the occupational radiation exposure during cardiac angiography: Simulation study

Younghoon Roh, Jungsu Kim, Hyemin Park, Jungmin Kim, Dongryeol Ryu, Kwangjin Chun, Jeonghun Seo, Bongki Lee, Byungryul Cho, Yongsu Yoon

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Cardiac angiography to visualize the cardiac coronary artery for lesions causes a lot of radiation exposure dose to the interventional cardiologist. We evaluated the occupational radiation exposure to the interventional cardiologist based on changes to the angle of the X-ray tube used in cardiac angiography and calculated the conversion factor for effective dose in this study. To evaluate the occupational radiation exposure resulting from scattered radiation to interventional cardiologists, organ doses for eyeball, thyroid, and heart were calculated using Monte Carlo simulation with korean typical man(KTMAN) phantom at the left anterior oblique (LAO)30/cranial (CRAN)30, CRAN40, right anterior oblique (RAO)30/CRAN30, RAO30/caudal(CAUD)20, CAUD39, LAO40/CAUD35, and LAO40 positions in the femoral and the radial artery puncture. In this study, analysis of the different angles showed the highest radiation exposure on LAO30/CRAN30 and CRAN40 position, which were 150.65% and 135.3%, respectively, compared to AP angles. Therefore, to reduce occupational dose for interventional cardiologists, it is recommended that radiation protection, such as using radiation shield and personal protective equipment (PPE), be used at LAO30/CRAN30 and CRAN40 angulation, and the conversion factor for calculating the organ dose received by the interventional cardiologists based on patient dose can be applied for improved occupational dose management.

Original languageEnglish
Article number8097
JournalInternational journal of environmental research and public health
Issue number15
Publication statusPublished - 2021 Aug 1


  • Cardiac angiography
  • Monte Carlo simulation
  • Occupational radiation exposure
  • Organ-dose

ASJC Scopus subject areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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