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Physical dosimetric reconstruction of a case of large area back skin injury due to overexposure in an interventional procedure

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Radiation Medicine and Protection 2022年第1期3卷 3-8页

作者： Yuchen Yin Xuan Wang Xianghui Kong Wenyue Zhang Yidi Wang Yuxuan Mao Jianwei Wang Tianhe Jia Yu Tu Bingjie Zhang Liang Sun State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversityCollaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsSuzhou 215123China Prevention and Treatment Center for Occupational Disease of Xinxiang City XinxiangHenan 453003China

To estimate the physical dose of skin and key organs in a case of overexposure during a cardiac interventional *** The female patient aged 50 suffered from owerexposure during ardiac interventional therapy in a hospital,Xinxiang city,Henan province,China in January *** mesh-type phantom for the patient was constructed based on the adult mesh-type reference computational phantoms(MRCPs)released by the International Comission on Radiological Protection Publication 145 (ICRP145)and phantom deformation *** of exposure scenario were constructed and simulated with particle and heavy ion transport code system(PHTTS)according to exposure ***:The maximum absorbed dose of key organs/tissues under iradiation in posteroanterior(PA)and 30°left anterior oblique directions(LOA)was 632.4 and 305.6 mGy,*** let lung,heart,and left mammary gland received a larger dose under both iradiation *** ratio of the absorbed dose with and without shielding was a lculated,and the relative difference in most organs was<1%between two *** iso-dose curve of the back skin revealed the ditribution of the absorbed dose(0.1-5.2 Gy).The dose estimate of key tssues/organs was higher than the conventional level,especially the local skin,up to 5.2 *** The interventional procedure in this ase resulted in a higher *** Carlo codes combined with the MRCPs can be employed to estimate physical dose to individuals in concrete irradia tion scenarios.

关键词： Physical dose Dose reconstruction Digital subtraction angiography Monte Carlo codes Particle and heavy ion transport code system (PHITS) mesh-type phantoms

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