radionuclide

简明释义

英[ˌreɪdɪəʊˈnjuːklaɪd]美[ˈredɪoˈnjʊˌklaɪd]

n. [核] 放射性核素

英英释义

单词用法

同义词

反义词

例句

1.Objective To evaluate the splenic function with radionuclide spleen imaging after spleen-preserving operation.

目的应用放射性核素脾显像评价保留性脾手术后的脾功能。

2.Field tracer migration test and laboratory simulation test are two commonly used methods to study radionuclide migration in geological media.

现场示踪试验和环境模拟实验是核素在地质介质迁移研究中常用的两种方法。

3.Objective To study the effects of duodenal electrical stimulation on small intestine transit function by radionuclide imaging.

目的利用放射性核素显像研究十二指肠电刺激对人小肠通过时间的影响。

4.Objective To evaluate the clinical value of radionuclide imaging in children with small intestinal bleeding.

目的探讨放射性核素显像对小儿小肠出血定位及病因诊断的价值。

5.Objective: To compare the value of MRI and radionuclide bone display in diagnosis of spinal metastases.

目的：比较MRI与核素骨显像对诊断脊柱转移瘤的价值。

6.Objective To evaluate the clinical value of radionuclide pulmonary perfusion imaging in diagnosing acute pulmonary embolism.

目的评价放射性核素肺灌注显像在诊断急性肺动脉栓塞中的价值。

7.CONCLUSION: Radionuclide imaging is a non invasive effective method in the test after replantation of severed limb.

结论：放射性核素显像在断肢再植术后检测应用中是一种无创性的有效方式。

8.The doctor explained that the treatment involved a specific radionuclide 放射性核素 to target cancer cells.

医生解释说，这种治疗涉及一种特定的放射性核素来针对癌细胞。

9.In nuclear medicine, a radionuclide 放射性核素 is often used for imaging purposes.

在核医学中，放射性核素通常用于成像目的。

10.The environmental study measured the levels of radionuclides 放射性核素 in the soil after the accident.

环境研究在事故后测量了土壤中放射性核素的水平。

11.Researchers are investigating the effects of radionuclides 放射性核素 on human health.

研究人员正在调查放射性核素对人类健康的影响。

12.The radionuclide 放射性核素 used in the PET scan helps visualize metabolic activity.

在PET扫描中使用的放射性核素有助于可视化代谢活动。

作文

The term radionuclide refers to a type of atom that is unstable and can emit radiation as it decays into a more stable form. This process can involve the release of particles or electromagnetic waves, which can be detected and measured. Understanding radionuclides is crucial in various fields such as medicine, environmental science, and nuclear energy. In medicine, for example, radionuclides are used in diagnostic imaging and treatment of diseases. One common application is in positron emission tomography (PET) scans, where a radioactive tracer is introduced into the body to help visualize metabolic processes. The ability to track these radionuclides allows doctors to identify abnormalities in tissues and organs, leading to early diagnosis and treatment of conditions like cancer. In environmental science, radionuclides play a significant role in studying the effects of radiation on ecosystems. They can be released into the environment through various means, such as nuclear accidents, medical waste disposal, or even natural occurrences like radon gas emissions from the earth. Monitoring the levels of radionuclides in soil and water is essential for assessing the safety of these environments for human health and wildlife. For instance, after the Fukushima nuclear disaster in Japan, extensive research was conducted to measure the levels of various radionuclides in the surrounding area to understand the impact of radiation on local flora and fauna. Furthermore, radionuclides are also utilized in the field of nuclear energy. They are the basis for the fuel used in nuclear reactors, where controlled nuclear fission reactions occur. Understanding the behavior of radionuclides within these reactors is vital for ensuring safe operation and managing nuclear waste. The challenge lies in the long half-lives of some radionuclides, which can remain hazardous for thousands of years. Therefore, effective strategies must be developed for the long-term storage and containment of nuclear waste to prevent contamination of the environment. In conclusion, radionuclides are not just scientific curiosities; they have practical implications that affect our health, environment, and energy resources. Whether in a hospital setting, an ecological study, or a nuclear power plant, the understanding of radionuclides is essential. As we continue to explore their properties and applications, it is crucial to approach their use with caution and respect for the potential risks they pose. Ongoing research and advancements in technology will help us manage and utilize radionuclides safely and effectively, paving the way for innovations that can benefit society while minimizing harm.

术语放射性核素指的是一种不稳定的原子，它在衰变为更稳定的形式时会发出辐射。这个过程可能涉及粒子或电磁波的释放，这些都可以被检测和测量。理解放射性核素在医学、环境科学和核能等多个领域中至关重要。例如，在医学中，放射性核素被用于诊断成像和疾病治疗。一个常见的应用是在正电子发射断层扫描（PET）中，放射性示踪剂被引入体内，以帮助可视化代谢过程。跟踪这些放射性核素的能力使医生能够识别组织和器官中的异常情况，从而导致癌症等疾病的早期诊断和治疗。 在环境科学中，放射性核素在研究辐射对生态系统的影响方面发挥着重要作用。它们可以通过多种方式释放到环境中，例如核事故、医疗废物处理，甚至是自然现象，如地球释放的氡气。监测土壤和水中放射性核素的水平对于评估这些环境对人类健康和野生动物的安全性至关重要。例如，在日本福岛核灾难之后，进行了广泛的研究，以测量周围地区各种放射性核素的水平，以了解辐射对当地动植物的影响。 此外，放射性核素还被用于核能领域。它们是核反应堆中使用的燃料的基础，其中发生受控的核裂变反应。理解这些反应堆中放射性核素的行为对于确保安全操作和管理核废料至关重要。挑战在于某些放射性核素具有较长的半衰期，可能会在数千年内保持危险。因此，必须制定有效的策略来长期储存和封闭核废料，以防止环境污染。 总之，放射性核素不仅仅是科学好奇心；它们对我们的健康、环境和能源资源有实际影响。无论是在医院环境、生态研究还是核电站中，理解放射性核素都是必不可少的。随着我们继续探索它们的特性和应用，谨慎和尊重它们可能带来的潜在风险是至关重要的。持续的研究和技术进步将帮助我们安全有效地管理和利用放射性核素，为社会带来好处，同时将危害降到最低。