| Li Mengyang,Wang Haiyun,Ruan Shuzhou,Zhai Ying,Zhang Wenyi,Jiao Ling.Estimation on organ absorbed dose conversion coefficient for patients during coronary intervention procedure with Monte Carlo method[J].Chinese Journal of Radiological Medicine and Protection,2022,42(2):137-143 |
| Estimation on organ absorbed dose conversion coefficient for patients during coronary intervention procedure with Monte Carlo method |
| Received:September 30, 2021 |
| DOI：10.3760/cma.j.cn112271-20210930-00399 |
| KeyWords:Monte Carlo Coronary Interventional therapy Organ dose Conversion coefficient |
| FundProject: |
| Author Name | Affiliation | E-mail | | Li Mengyang | Institute of Radiation Medicine Chinese Academy of Medical Sciences, Tianjin 300100, China | | | Wang Haiyun | Institute of Radiation Medicine Chinese Academy of Medical Sciences, Tianjin 300100, China | | | Ruan Shuzhou | Institute of Radiation Medicine Chinese Academy of Medical Sciences, Tianjin 300100, China | | | Zhai Ying | Peking University People's Hospital, Beijing 100032, China | | | Zhang Wenyi | Institute of Radiation Medicine Chinese Academy of Medical Sciences, Tianjin 300100, China | | | Jiao Ling | Institute of Radiation Medicine Chinese Academy of Medical Sciences, Tianjin 300100, China | jiaoling@irm-cams.ac.cn |
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| Abstract:: |
| Objective To calculate the conversion coefficient from dose area product (DAP) to organ absorbed dose by Monte Carlo method in order to conveniently estimate doses to patient organ during coronary intervention procedure. Methods The Geant4 Monte Carlo simulation kit was used to calculate the organ absorbed dose conversion coefficients by simulating exposure scene. Results The conversion coefficients used in coronary angiography (CAG) for lung, bone marrow, liver and heart were (0.283±0.068), (0.169±0.049), (0.110±0.077) and (0.080±0.032) mGy/(Gy·cm2) for male, and (0.376±0.121), (0.192±0.056), (0.153±0.105), and (0.102±0.033) mGy/(Gy·cm2) for female, respectively. These were similar to those in the case of percutaneous coronary intervention (PCI). The DAPs for different interventional procedures were statistically significant (t=-6.012, P<0.05). The DAPs for difference gender groups had no statistically significant (P>0.05). Conclusions Conversion coefficient for organ absorbed dose has little correlation with CAG and PCI in the same sex group. Dose conversion coefficients for female group are greater than those for male group in the same procedure. Conversion coefficients from DAP to organ absorbed dose calculated with Monte Carlo method can provide convenience for rapidly estimating the organ absorbed dose to clinical patients. |
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