在室内测量气及其癌症风险,使用探测器探测器
Nada Farhan Kadhim1, Yasser Ayad Kadhim1, Hala Adnan Ahmed1
1Department of Physics, College of Science, Mustansiriyah University, Baghdad, Iraq.
概括
测量了巴格达30个家庭的气水平,以评估肺癌风险. 大多数家庭都是安全的,只有一个家庭超过了推的暴露限值,这表明对这种致癌物质的一般安全性.
科学领域:
- 环境健康 环境健康
- 辐射物理学 辐射物理学
- 公共卫生 公共卫生
背景情况:
- -222 (Rn) 是一种天然存在的放射性气体,已知致癌物.
- 室内暴露是全球肺癌的重要危险因素.
- 评估室内水平对于公共卫生风险管理至关重要.
研究的目的:
- 调查巴格达30个家庭的室内气 (Rn) 度.
- 根据测量的水平,估计相关的肺癌风险 (LCR).
- 将发现与国际安全指南进行比较.
主要方法:
- 采用了使用探偵探測器的積極技術.
- 在7天 (166小时) 的时间里,探测器被放置在1米高的客厅里.
- 测量包括平均,最大和最小暴露,温度和相对湿度.
主要成果:
- 平均暴露范围在14 ± 3到53 ± 4.9 Bq m-3之间.
- 一个家庭 (h1) 的最大暴露值为307 Bq m−3,略高于全球200-300 Bq m−3的极限.
- 计算的年有效剂量率在0.35至3.2μSv-1之间,肺癌风险在15.1至57.8之间.
结论:
- 巴格达大多数被调查的房屋都免受气暴露的危害.
- 水平通常在可接受的范围内,造成肺癌的风险较低.
- 进一步监测可能是有益的,特别是在读数略高的区域.
相关概念视频
01:30Radiological Investigation II: MRI and Ventilation Perfusion Scan
773
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
773
02:59Biological Effects of Radiation
18.5K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
18.5K
01:13Radiological Investigation III: Pulmonary Angiogram and PET Scan
550
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
550