radioisotope

简明释义

英[ˌreɪdiəʊˈaɪsətəʊp]美[ˌreɪdioʊˈaɪsətoʊp]

n. [核] 放射性同位素

英英释义

单词用法

同义词

反义词

例句

1.Then the blast of radiation emitted by the radioisotope would destroy the... tumor cells nearby.

于是，放射性同位素发出的辐射冲击将会破坏邻近的肿瘤细胞。

2.The State establishes a system for radioisotope registration.

国家建立放射性同位素备案制度。

3.In this paper, the principle, experimental arrangement and computer program of fundamental parameters method in radioisotope source excited energy dispersive X-ray analysis are described.

本文叙述了放射性同位素源激发能量色散x射线分析中基本参数法的原理、实验装置和计算机程序。

4.This paper retrospects to the developing history and usage status of radioisotope thermoelectric generator (RTG) used in space in the 20th century.

重点回顾了20世纪放射性同位素电池的研发历史和空间发射现状；

5.Represents a general heat source. Radioisotope or combustion heat source can be specified.

表示普通热源。可指定放射性同位素或燃烧热源。

6.Accelerators also used for radioisotope production, cancer therapy, Biological sterilization, and one form of radiocarbon dating.

加速器也用于制造放射性同位素、治疗癌症、生物消毒及放射性碳定年。

7.The rest pain, pain-free walking distance, ABI, and radioisotope scanning of lower extremities were determined during follow-up.

随访时检查跛行距离、ABI、双下肢放射性核素扫描等客观指标。

8.In nuclear medicine, a radioisotope 放射性同位素 is often used for imaging and treatment purposes.

在核医学中，放射性同位素通常用于成像和治疗目的。

9.Researchers are studying the effects of a new radioisotope 放射性同位素 on cancer cells.

研究人员正在研究一种新放射性同位素对癌细胞的影响。

10.A radioisotope 放射性同位素 can be used as a tracer in environmental studies.

放射性同位素可以作为环境研究中的示踪剂。

11.The radioisotope 放射性同位素 iodine-131 is commonly used to treat thyroid cancer.

放射性同位素碘-131通常用于治疗甲状腺癌。

12.The doctor used a radioisotope 放射性同位素 to trace the flow of blood in the patient's body.

医生使用了一个放射性同位素来追踪病人体内血液的流动。

作文

The term radioisotope refers to a variant of a chemical element that has an unstable nucleus and emits radiation as it decays into a more stable form. This process of decay can release particles and energy in various forms, including alpha particles, beta particles, and gamma rays. Radioisotopes are found naturally in the environment, but they can also be artificially produced in laboratories or nuclear reactors. Their unique properties make them invaluable in various fields, particularly in medicine and industry.In medicine, radioisotopes play a crucial role in diagnostics and treatment. For instance, one of the most commonly used radioisotopes is Technetium-99m. It is widely employed in nuclear medicine for imaging purposes. When injected into the body, it helps to visualize organs and tissues, allowing doctors to diagnose conditions such as cancer, heart disease, and other abnormalities. The ability to track the function of organs in real-time provides a significant advantage over traditional imaging techniques.Moreover, radioisotopes are not only used for diagnostic imaging but also for therapeutic purposes. For example, Iodine-131 is used to treat thyroid cancer and hyperthyroidism. It selectively targets thyroid cells, delivering radiation that destroys malignant or overactive cells while minimizing damage to surrounding healthy tissue. This targeted approach exemplifies how radioisotopes can be harnessed for effective treatment while reducing side effects.Beyond medicine, radioisotopes have essential applications in industry and research. In the field of geology, they are used for radiometric dating, which helps scientists determine the age of rocks and fossils. By measuring the decay of specific radioisotopes, researchers can gain insights into the history of the Earth and the timing of geological events.Furthermore, radioisotopes are utilized in various industrial processes, such as quality control and material testing. They can be employed to measure the thickness of materials, detect leaks in pipelines, and even sterilize medical equipment. The versatility of radioisotopes makes them a valuable tool across multiple sectors, enhancing safety and efficiency.Despite their advantages, the use of radioisotopes comes with challenges and risks. The radiation emitted during decay can pose health hazards if not handled properly. Therefore, strict regulations and safety protocols are in place to ensure the safe use of radioisotopes in both medical and industrial applications. Professionals working with these materials must undergo rigorous training to understand the principles of radiation safety and the potential risks involved.In conclusion, radioisotopes are remarkable substances that have transformed various fields, particularly medicine and industry. Their ability to emit radiation allows for innovative diagnostic and therapeutic techniques that improve patient outcomes and enhance our understanding of the world around us. As research continues and technology advances, the applications of radioisotopes are likely to expand further, leading to new discoveries and improvements in various domains. Understanding the significance and implications of radioisotopes is essential for harnessing their full potential while ensuring safety and efficacy in their use.

术语放射性同位素指的是一种具有不稳定核的化学元素变体，并在衰变为更稳定形式时发出辐射。这种衰变过程可以释放各种形式的粒子和能量，包括阿尔法粒子、贝塔粒子和伽马射线。放射性同位素自然存在于环境中，但也可以在实验室或核反应堆中人工生产。它们独特的性质使其在多个领域，特别是在医学和工业中，具有重要的价值。在医学中，放射性同位素在诊断和治疗中发挥着至关重要的作用。例如，最常用的放射性同位素之一是锝-99m。它广泛应用于核医学中的成像目的。当注入体内时，它有助于可视化器官和组织，使医生能够诊断癌症、心脏病和其他异常情况。实时跟踪器官功能的能力为传统成像技术提供了显著优势。此外，放射性同位素不仅用于诊断成像，还用于治疗目的。例如，碘-131用于治疗甲状腺癌和甲状腺功能亢进症。它选择性地靶向甲状腺细胞，释放辐射摧毁恶性或过度活跃的细胞，同时尽量减少对周围健康组织的损害。这种靶向方法例证了如何利用放射性同位素进行有效治疗，同时减少副作用。除了医学之外，放射性同位素在工业和研究中也具有重要应用。在地质学领域，它们用于放射性测年，帮助科学家确定岩石和化石的年龄。通过测量特定放射性同位素的衰变，研究人员可以深入了解地球的历史和地质事件的时间。此外，放射性同位素还被用于各种工业过程，如质量控制和材料测试。它们可以用于测量材料的厚度、检测管道泄漏，甚至消毒医疗设备。放射性同位素的多功能性使其成为多个行业中宝贵的工具，提高安全性和效率。尽管有其优势，使用放射性同位素也面临挑战和风险。衰变过程中释放的辐射如果处理不当可能会对健康构成危害。因此，严格的法规和安全协议已被制定，以确保在医学和工业应用中安全使用放射性同位素。与这些材料打交道的专业人员必须接受严格的培训，以了解辐射安全的原理和潜在风险。总之，放射性同位素是非凡的物质，已经改变了多个领域，特别是医学和工业。它们发出辐射的能力允许创新的诊断和治疗技术，从而改善患者结果并增强我们对周围世界的理解。随着研究的持续和技术的进步，放射性同位素的应用可能会进一步扩展，导致新发现和各个领域的改善。理解放射性同位素的重要性和影响对于充分利用其潜力，同时确保其使用的安全性和有效性至关重要。