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眼晶状体H_p(3)剂量计的医用诊断X射线辐射质校准研究 被引量:1

Study of Calibration the Dosemeter for Measuring Eye Lens Dose in Terms of Hp ( 3 ) with Medical Diagnostic X - ray
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摘要 目的 研究医用诊断X射线辐射质在校准眼晶体H_p(3)剂量计中的应用。方法 根据ISO 12794(2000)标准的要求,选择IEC 61267中的医用诊断X射线辐射质(RQR4、RQR7、RQR9)进行实验,并与ISO 4037中的窄束X射线辐射质(N60~N120)的实验结果相比较。结果 能量响应:窄束X射线为-20%〈R〈40%;医用诊断X射线为一10%〈R〈10%。各向同性:响应平均值与垂直入射响应的差别,N80为0.99±0.08,RQR4为1.02±0.04,RQR7为0.99±0.03,RQR9为0.98±0.06。结论医用诊断X射线辐射质(RQR)比N系列窄束X射线能谱更宽,能更好的代表实际辐射场的能谱,更适合作为剂量计校准的辐射质。 Objective To study the application of medical diagnostic X - ray in the dosemeter for measuring eye lens dose in terms of Hp (3). Methods The standard for calibration is based on ISO 12794 (2000) and radiation quality for calibration is medical diagnostic X -ray in IEC 61267 (RQR4 RQR7 RQR9 ). The experimental result is compared with the result calibra- ted with the narrow beam X - ray ( N60 - N120) taken from ISO 4037. Results Energy response is 20% 〈 R 〈 40% for the narrow beam,and - 10% 〈 R 〈 10% for RQR beam. As isotropy,mean the difference of value of the response from the re- sponse of normal incidence is (0.99 ± 0.08 ) for the NS0, ( 1.02 ± 0.04 ) for the RQR4, ( 0.99 ± 0.03 ) for the RQR7, and (0.98 ± 0.06)for the RQR9. Conclusion RQR spectra are much wider than N spectra ISO series which better resemble the real spectra at workplaces. Medical diagnostic X - ray (RQR) is more suitable as a radiation quality for calibration the dosimeter.
作者 李海亮 王仲文 许家昂 李福生 闵楠 LI Hal - liang,WANG ZHong - wen,XU Jia - ang,LI Fu - Sheng,MIN Nan. (1. China Institute of Atomic Energy, Beijing 102413 China ;2. Institute of Radiation Medicine , Shandong Academy of Medical Sciences.)
出处 《中国辐射卫生》 2016年第4期385-388,共4页 Chinese Journal of Radiological Health
基金 山东省自然科学基金资助项目(ZR2013AM018),山东省医药卫生科技发展计划项目(2015WS0200)
关键词 眼晶状体 剂量 热释光剂量计 医用诊断X射线 校准 Eye Lens Dose Thermoluminescent Dosemeter Medical Diagnostic X-ray Calibration
作者简介 李海亮(1974-),男,山东安丘人,助理研究员,中国原子能科学研究院辐射防护专业博士研究生。
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