| 马锐垚,邱睿,任丽,等.基于中国儿童参考体模的X射线摄影剂量评估[J].中华放射医学与防护杂志,2021,41(5):363-367.Ma Ruiyao,Qiu Rui,Ren Li,et al.Dose estimation of X-ray radiography based on Chinese pediatric reference phantoms[J].Chin J Radiol Med Prot,2021,41(5):363-367 |
| 基于中国儿童参考体模的X射线摄影剂量评估 |
| Dose estimation of X-ray radiography based on Chinese pediatric reference phantoms |
| 投稿时间：2020-12-17 |
| DOI：10.3760/cma.j.issn.0254-5098.2021.05.008 |
| 中文关键词: 儿童体模 X射线摄影 蒙特卡罗 辐射剂量 |
| 英文关键词:Pediatric phantom X-ray radiography Monte Carlo Radiation dose |
| 基金项目:国家自然科学基金（11875036） |
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| 中文摘要: |
| 目的 建立中国儿童面元参考体模，并将其应用于儿童X射线摄影的剂量评估中。方法 基于不同年龄儿童的CT原始数据，经过器官勾画、器官调整优化等过程建立起5和10岁的中国儿童面元参考体模。基于上述体模，利用蒙特卡罗方法，对X射线摄影进行建模，计算不同照射条件下儿童受检者器官剂量转换系数及有效剂量转换系数。结果 建立的5和10岁中国儿童面元参考体模，体格参数符合国家标准要求，器官质量与中国参考人参考值差异在2%以内。计算得到X射线摄影胸部后前位和腹部前后位、管电压60~90 kVp、总滤过2.5~4 mmAl的器官剂量及有效剂量转换系数数据库，有效剂量转换系数与文献结果差异在3%以内。结论 所建立的中国儿童面元参考体模能广泛应用于放射防护研究，其研究结果能够为我国儿童临床X射线摄影剂量评估提供参考数据。 |
| 英文摘要: |
| Objective The Chinese pediatric mesh-type reference phantoms were developed and applied in the dose assessment of X-ray radiography. Methods The 5- and 10-year-old Chinese pediatric mesh-type reference phantoms were developed based on the CT data. Based on the phantoms, the Monte Carlo method was applied to simulate the X-ray radiography to calculate the organ dose conversion coefficient and the effective dose conversion coefficient in different radiography conditions. Results The 5- and 10-year-old Chinese pediatric mesh-type reference phantoms were developed, and the physical parameters were consistent with the national standard. The differences of the organ mass between the established phantoms and reference data were within 2%. The database of the pediatric chest posteroanterior projection and abdominal anteroposterior projection,tube voltage 60-90 kVp, total filtration 2.5~4 mmAl were simulated, and the difference between the effective dose conversion factor and the literature result was within 3%. Conclusions The established Chinese pediatric mesh-type reference phantoms can be applied in the studies of radiation protection and clinical medicine and their result can provide an important reference for the dose assessment of the pediatric X-ray radiography. |
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