millisievert

简明释义

英[ˈmɪlɪˌsiːvɜːt]美[ˈmɪlɪˌsiːvərt]

n. 毫希，毫西弗（一种辐射剂量单位）

英英释义

单词用法

同义词

反义词

例句

1.The worker 's cumulative radiation exposure was 0.5 millisievert, far below the legal limit.

这名工作人员累积辐射剂量为0.5毫西弗，远低于法定上限。

2.The worker 's cumulative radiation exposure was 0.5 millisievert, far below the legal limit.

这名工作人员累积辐射剂量为0.5毫西弗，远低于法定上限。

3.A chest X-ray typically delivers a dose of about 0.1 millisievert 毫西弗.

一次胸部X光检查通常会提供约0.1 毫西弗 millisievert的剂量.

4.The average annual background radiation exposure for a person is about 2 to 3 millisievert 毫西弗.

一个人的平均年度背景辐射暴露约为2到3 毫西弗 millisievert.

5.Radiation workers are limited to a maximum dose of 50 millisievert 毫西弗 per year.

辐射工作者每年的最大剂量限制为50 毫西弗 millisievert.

6.Living near a nuclear power plant may expose residents to an additional 0.01 millisievert 毫西弗 per year.

居住在核电站附近可能使居民每年额外暴露于0.01 毫西弗 millisievert.

7.A CT scan of the abdomen can result in a radiation exposure of around 10 millisievert 毫西弗.

腹部CT扫描的辐射暴露约为10 毫西弗 millisievert.

作文

Understanding radiation exposure is crucial in today's world, especially with the increasing use of technology and medical imaging. One term that often comes up in discussions about radiation safety is millisievert, a unit of measurement used to quantify the amount of radiation absorbed by the human body. The millisievert (mSv) is one-thousandth of a sievert, which is the standard unit for measuring the biological effects of ionizing radiation. Knowing how to interpret this measurement can help individuals make informed decisions regarding their health and safety.Radiation is present everywhere in our environment, from natural sources like cosmic rays and radon gas to artificial sources such as X-rays and nuclear power plants. The average person is exposed to about 2 to 3 millisieverts of background radiation each year, primarily from natural sources. However, certain activities can significantly increase this exposure. For instance, a single chest X-ray typically delivers a dose of around 0.1 millisievert, while a CT scan of the abdomen may expose a patient to approximately 10 millisieverts. Understanding these numbers is essential, particularly for patients who may require multiple scans or treatments involving radiation.The concept of millisievert becomes even more critical in the context of occupational exposure. Workers in industries that involve radiation, such as healthcare or nuclear energy, are monitored closely to ensure their exposure remains within safe limits. The recommended annual dose limit for radiation workers is usually set at 20 millisieverts, averaged over five years. Exceeding this limit can lead to serious health risks, including an increased likelihood of cancer.In addition to occupational exposure, the millisievert measurement plays a significant role in public health guidelines. After incidents like the Fukushima nuclear disaster, authorities assess the potential impact of radiation exposure on the surrounding communities. For example, evacuation zones are often determined based on projected radiation doses, measured in millisieverts. Residents living in areas with higher radiation levels are advised to take precautions to minimize their exposure, highlighting the importance of understanding this unit of measurement.Furthermore, the millisievert is also relevant in the field of environmental monitoring. Scientists study the effects of radiation on ecosystems, and the data collected often includes measurements in millisieverts. This information can guide policy decisions regarding land use, waste management, and public safety initiatives.To sum up, grasping the significance of millisievert is vital for anyone concerned about radiation exposure. Whether it’s in a medical setting, an occupational environment, or during environmental assessments, this unit provides a clear framework for understanding how much radiation we encounter and the potential risks involved. By being aware of our exposure levels, we can take proactive steps to protect ourselves and our communities from the harmful effects of radiation. Knowledge is indeed power, and in the case of radiation, understanding millisievert measurements can lead to better health outcomes and safer practices in our daily lives.

理解辐射暴露在当今世界至关重要，尤其是在技术和医学成像使用日益增加的情况下。一个常常在关于辐射安全讨论中出现的术语是millisievert，这是一个用于量化人体吸收辐射量的测量单位。millisievert（mSv）是西弗的千分之一，西弗是测量电离辐射生物效应的标准单位。了解如何解读这一测量可以帮助个人做出有关健康和安全的明智决策。辐射无处不在，从宇宙射线和氡气等自然来源到X射线和核电站等人工来源。普通人每年大约暴露于2到3millisieverts的背景辐射，主要来自自然来源。然而，某些活动可能会显著增加这种暴露。例如，一次胸部X光检查通常会给患者带来大约0.1millisievert的剂量，而腹部CT扫描可能使患者暴露于大约10millisieverts。理解这些数字至关重要，特别是对于可能需要多次扫描或涉及辐射治疗的患者。在职业暴露的背景下，millisievert的概念变得更加关键。在涉及辐射的行业，如医疗保健或核能，工作人员受到严格监控，以确保他们的暴露保持在安全范围内。通常为辐射工作者设定的年度剂量限值为20millisieverts，平均在五年内。如果超过这一限值，可能会导致严重的健康风险，包括癌症的发生率增加。除了职业暴露之外，millisievert的测量在公共卫生指南中也起着重要作用。在福岛核灾难等事件后，相关部门评估辐射暴露对周边社区的潜在影响。例如，撤离区通常基于预计的辐射剂量进行确定，单位以millisieverts计。生活在辐射水平较高地区的居民被建议采取预防措施以减少暴露，突显了理解这一测量单位的重要性。此外，millisievert在环境监测领域也相关。科学家研究辐射对生态系统的影响，收集的数据通常包括以millisieverts为单位的测量。这些信息可以指导有关土地使用、废物管理和公共安全举措的政策决策。总之，掌握millisievert的重要性对任何关注辐射暴露的人来说都是至关重要的。无论是在医疗环境、职业环境还是环境评估中，这一单位提供了一个清晰的框架，以理解我们遇到的辐射量及其潜在风险。通过意识到我们的暴露水平，我们可以采取主动措施来保护自己和社区免受辐射的有害影响。知识确实是力量，在辐射的情况下，理解millisievert的测量可以带来更好的健康结果和更安全的日常实践。