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ANSWERS TO IF THE LEAD APRONS ARE REALLY HELPFUL IN NUCLEAR MEDICINE FROM THE PERSPECTIVE OF SPECTROSCOPY

机译：从光谱学的角度出发，如果核医学中铅围裙真的很有用

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摘要

Wearing lead X-ray-protective aprons is a routine in nuclear medicine department in parts of China. However, the staff are often perplexed by questions such as if it is imperative to wear aprons when injecting radioactive drugs, how much radiation dosage can be shielded and if the apron will produce secondary radiation instead? To answer these questions, a semiconductor detector was employed to record different gamma and X-ray spectra with and without the lead apron or lead sheet. Then, we could estimate the signal shielding ratio to different photons for the lead apron and compare with the hospitals measured data. In general, the two results coincided well. The spectral results showed that the detrimental secondary X-rays irradiation rises when the energy of gamma rays exceeds the K absorption edge of lead (88 keV). Moreover, the aprons are not so effect- ive for gamma rays of 364 keV emitted from ~(131)I and 511 keV emitted from the positron radioactive nuclides. This work is purely a physical measurement in the laboratory. To the best of our knowledge, this is the first quantitative study on the level of gamma rays protection offered by the medical lead aprons and the importance of the spectroscopic measurements is dis- cussed in this paper.
机译：在中国部分地区，戴铅X射线防护围裙是核医学部门的日常工作。但是，工作人员常常会感到困惑，例如在注射放射性药物时是否必须戴围裙，可以屏蔽多少辐射剂量以及围裙是否会产生二次辐射？为了回答这些问题，采用了半导体检测器来记录有和没有铅围裙或铅板的不同伽马和X射线光谱。然后，我们可以估计铅围裙对不同光子的信号屏蔽率，并与医院的测量数据进行比较。总的来说，两个结果吻合得很好。光谱结果表明，当γ射线的能量超过铅的K吸收边缘（88keV）时，有害的二次X射线辐射增加。此外，围裙对从〜（131）I发射的364keV的伽马射线和从正电子放射性核素发射的511keV的伽马射线效果不佳。这项工作纯粹是实验室中的物理测量。据我们所知，这是关于医用铅皮圈所提供的伽马射线防护水平的首次定量研究，并且本文讨论了光谱测量的重要性。

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  • 来源
    《Radiation Protection Dosimetry》 |2017年第4期|558-564|共7页
  • 作者

    X. He; R. Zhao; L. Rong; K. Yao; S. Chen; B. Wei;

  • 作者单位

    Institute of Modern Physics, Fudan University, 200433 Shanghai, China ,Department of Radiotherapy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 200433 Shanghai, China;

    Department of Radiotherapy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 200433 Shanghai, China;

    Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800 Shanghai, China;

    Institute of Modern Physics, Fudan University, 200433 Shanghai, China;

    Institute of Nuclear Medicine, Fudan University, 200032 Shanghai, China;

    Institute of Modern Physics, Fudan University, 200433 Shanghai, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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