external radiation

简明释义

外照射

英英释义

例句

1.The study focused on the effects of external radiation on human health.

这项研究重点关注外部辐射对人类健康的影响。

2.The patient was treated with external radiation for their cancer diagnosis.

患者因癌症诊断接受了外部辐射治疗。

3.People living near the facility were concerned about potential external radiation exposure.

住在设施附近的人们担心可能的外部辐射暴露。

4.During the safety inspection, we measured the levels of external radiation around the nuclear plant.

在安全检查期间，我们测量了核电厂周围的外部辐射水平。

5.The technician explained how external radiation is used in radiotherapy.

技术人员解释了如何在放射治疗中使用外部辐射。

作文

In the field of physics and medical science, the term external radiation refers to the exposure to radiation from sources outside the body. This concept is particularly significant in the context of cancer treatment, where external radiation therapy is a common method used to target and destroy cancer cells. Unlike internal radiation, which involves placing radioactive materials inside the body, external radiation therapy uses high-energy beams, such as X-rays or gamma rays, directed at the tumor from outside the body.The process of external radiation therapy begins with careful planning and imaging studies to locate the tumor precisely. Medical professionals use advanced imaging techniques like CT scans or MRI to determine the size and shape of the tumor, as well as its location in relation to surrounding healthy tissues. This information is crucial for devising a treatment plan that minimizes damage to healthy cells while maximizing the dose received by the cancerous tissue.Once the planning phase is complete, patients undergo a series of treatments, typically delivered over several weeks. Each session lasts only a few minutes, but the cumulative effect of external radiation can be significant. Patients might experience side effects such as fatigue, skin irritation, or changes in appetite, but these are generally manageable and temporary.The effectiveness of external radiation therapy depends on various factors, including the type of cancer, its stage, and the overall health of the patient. For many individuals, this treatment can lead to a reduction in tumor size, alleviation of symptoms, and even a cure. However, it is essential to discuss potential risks and benefits with a healthcare provider, as external radiation may not be suitable for everyone.In addition to its use in treating cancer, external radiation is also employed in other medical applications, such as sterilizing medical equipment and in certain diagnostic procedures. The precision and control offered by modern radiation technology have made external radiation a valuable tool in medicine.Moreover, understanding the principles behind external radiation is vital for ensuring safety in environments where radiation is present. Professionals working in industries that utilize radiation must adhere to strict safety protocols to protect themselves and others from unnecessary exposure. This includes wearing protective gear, monitoring radiation levels, and following guidelines for handling radioactive materials.In conclusion, external radiation plays a crucial role in contemporary medical practices, especially in oncology. Its ability to target cancer cells while minimizing harm to healthy tissues makes it an indispensable part of cancer treatment regimens. As technology advances, the methods and effectiveness of external radiation therapy continue to improve, offering hope to countless patients around the world. Understanding this concept not only enhances our knowledge of medical treatments but also emphasizes the importance of safety in radiation use across various fields.

在物理学和医学领域，术语外部辐射指的是来自身体外部的辐射暴露。这个概念在癌症治疗的背景下尤为重要，其中外部辐射疗法是用于靶向和摧毁癌细胞的一种常见方法。与内部辐射不同，内部辐射涉及将放射性材料放置在体内，而外部辐射疗法则使用高能束，如X射线或伽马射线，从身体外部直接照射肿瘤。外部辐射疗法的过程始于仔细的规划和影像学研究，以精确定位肿瘤。医疗专业人员使用先进的影像技术，如CT扫描或MRI，来确定肿瘤的大小和形状，以及它与周围健康组织的关系。这些信息对于制定治疗计划至关重要，以最大限度地减少对健康细胞的损害，同时最大化癌组织所接受的剂量。一旦规划阶段完成，患者会接受一系列治疗，通常持续几周。每次治疗仅持续几分钟，但外部辐射的累积效果可能很显著。患者可能会经历疲劳、皮肤刺激或食欲变化等副作用，但这些通常是可以管理和暂时的。外部辐射疗法的有效性取决于多种因素，包括癌症类型、其阶段和患者的整体健康状况。对于许多人来说，这种治疗可以导致肿瘤缩小、缓解症状，甚至治愈。然而，与医疗服务提供者讨论潜在的风险和收益至关重要，因为外部辐射可能并不适合每个人。除了在癌症治疗中的应用外，外部辐射还用于其他医疗应用，例如消毒医疗设备和某些诊断程序。现代辐射技术所提供的精确性和控制能力使得外部辐射成为医学中一种有价值的工具。此外，理解外部辐射背后的原理对于确保在存在辐射的环境中的安全至关重要。在利用辐射的行业中工作的专业人员必须遵循严格的安全协议，以保护自己和他人免受不必要的暴露。这包括穿戴防护装备、监测辐射水平以及遵循处理放射性材料的指南。总之，外部辐射在当代医学实践中发挥着至关重要的作用，特别是在肿瘤学中。它能够靶向癌细胞，同时尽量减少对健康组织的伤害，使其成为癌症治疗方案中不可或缺的一部分。随着技术的进步，外部辐射疗法的方法和效果不断改善，为全球无数患者带来了希望。理解这一概念不仅增强了我们对医疗治疗的知识，还强调了在各个领域使用辐射时安全的重要性。