radiotracer

简明释义

英[ˈreɪdɪəʊˌtreɪsə(r)]美[ˈredioˌtresər]

n. 放射示踪物；[核] 放射性示踪剂

英英释义

单词用法

同义词

反义词

例句

1.A radiotracer is a radioactive compound that is safe to inject into patients and shows up clearly on a scan.

这种放射示踪剂是一种具有放射活性的复合物，具有注射安全且扫描显示清晰的优点。

2.An important part of the study was identifying a radiotracer that accumulates in Conn's adenomas and nowhere else.

该项研究的重要性在于证实这种放射性示踪剂仅在康恩氏腺瘤中蓄积。

3.The most commonly used PET radiotracer is fluorodeoxyglucose (FDG), a radiolabeled form of glucose, which is consumed more avidly by tumors than by normal tissue.

最常用的PET放射示踪迹为氟脱氧葡萄糖（FDG），葡萄糖的放射示踪形式，在肿瘤组织中较正常组织消耗更快。

4.For the first time we coupled respirometric and radiotracer techniques to simultaneously measure the rates of oxygen and metal uptake in the green mussel under different environmental conditions.

首次将呼吸计和放射性示踪技术相结合，同时测定同一翡翠贻贝个体在不同条件下的耗氧率和溶解态重金属吸收率。

5.For the first time we coupled respirometric and radiotracer techniques to simultaneously measure the rates of oxygen and metal uptake in the green mussel under different environmental conditions.

首次将呼吸计和放射性示踪技术相结合，同时测定同一翡翠贻贝个体在不同条件下的耗氧率和溶解态重金属吸收率。

6.Translocation of 14 C activity to rhizome increased with the increasing of leaf pairs, but radiotracer concentration in rhizomes decreased rapidly in plants with more than 10 leaf pairs.

C草甘膦传导至地下根茎的量随植株叶数的增加而增多，但14 C草甘膦含量在多于10对叶的植株中迅速下降。

7.SPECT imaging will demonstrate decreased radiotracer uptake in the frontal and temporal lobes.

SPECT成像显示额颞叶放射性摄取减低。

8.The radiotracer helps in identifying areas of inflammation within the body.

这个放射性示踪剂有助于识别身体内的炎症区域。

9.Using a radiotracer, doctors can assess blood flow in the heart.

医生可以使用放射性示踪剂评估心脏的血流。

10.In PET scans, a radiotracer is injected to detect cancerous cells in the body.

在正电子发射断层扫描中，注射一个放射性示踪剂以检测身体中的癌细胞。

11.The research team developed a new radiotracer that targets specific types of tumors.

研究小组开发了一种新的放射性示踪剂，能够靶向特定类型的肿瘤。

12.The doctor used a radiotracer to visualize the patient's organ function during the scan.

医生使用了一个放射性示踪剂来在扫描过程中可视化病人的器官功能。

作文

In the field of medical imaging, the use of a radiotracer has revolutionized the way we diagnose and treat diseases. A radiotracer is a substance that emits radiation and is used in conjunction with imaging techniques such as positron emission tomography (PET) or single photon emission computed tomography (SPECT). These substances are typically radioactive isotopes that are attached to molecules that can target specific organs or tissues in the body. This targeting ability allows healthcare professionals to visualize areas of interest in real-time, providing critical information about the functioning of various organs.The process begins when a patient is administered a radiotracer, which is often delivered through an injection or an oral dose. Once inside the body, the radiotracer travels to the area being examined. For example, if a doctor wants to assess blood flow to the heart, a radiotracer that binds to blood cells can be used. As the radiotracer accumulates in the targeted area, it emits gamma rays that can be detected by specialized cameras. The data collected is then processed to create detailed images that reveal how well the organ is functioning.One of the significant advantages of using a radiotracer is its ability to provide functional information rather than just structural details. Traditional imaging techniques like X-rays or CT scans primarily show the anatomy of the body, but they do not give insight into how well those structures are working. In contrast, a radiotracer can highlight areas of abnormal function, which can be indicative of conditions such as cancer, heart disease, or neurological disorders.Moreover, the use of radiotracers is not limited to diagnosis; they also play a role in treatment planning. For instance, oncologists can use PET scans with specific radiotracers to determine the extent of cancer spread before deciding on the best course of treatment. This personalized approach enhances the effectiveness of therapies and minimizes unnecessary procedures.However, the use of radiotracers does come with some considerations. The radiation exposure from these substances, although generally low and considered safe, is still a factor that needs to be managed. Healthcare providers must ensure that the benefits of using a radiotracer outweigh any potential risks associated with radiation exposure. This involves careful selection of patients and the type of radiotracer used, as well as adherence to safety protocols during the imaging process.In conclusion, the advent of radiotracers has significantly enhanced the capabilities of modern medicine, particularly in the realm of diagnostics and treatment planning. By allowing for real-time visualization of physiological processes, radiotracers have become indispensable tools in the early detection and management of various health conditions. As technology advances, we can expect even more innovative applications of radiotracers in the future, further improving patient outcomes and expanding our understanding of human health.

在医学影像领域，放射性示踪剂的使用彻底改变了我们诊断和治疗疾病的方式。放射性示踪剂是一种发出辐射的物质，通常与正电子发射断层扫描（PET）或单光子发射计算机断层扫描（SPECT）等成像技术结合使用。这些物质通常是放射性同位素，它们附着在能够靶向身体特定器官或组织的分子上。这种靶向能力使医疗专业人员能够实时可视化感兴趣的区域，提供有关各种器官功能的关键信息。这一过程始于将放射性示踪剂施用于患者，通常通过注射或口服剂量给药。一旦进入体内，放射性示踪剂就会前往被检查的区域。例如，如果医生想要评估心脏的血流，可以使用一种与血细胞结合的放射性示踪剂。随着放射性示踪剂在目标区域的积累，它会发出伽马射线，这些射线可以被专用相机检测到。收集到的数据随后被处理，以创建详细的图像，揭示器官的功能状态。使用放射性示踪剂的一个显著优势是它能够提供功能信息，而不仅仅是结构细节。传统的成像技术如X射线或CT扫描主要显示身体的解剖结构，但它们并不提供这些结构的工作状态的见解。相比之下，放射性示踪剂能够突出异常功能的区域，这可能表明癌症、心脏病或神经系统疾病等状况。此外，放射性示踪剂的使用不仅限于诊断；它们还在治疗规划中发挥作用。例如，肿瘤科医生可以使用特定的放射性示踪剂进行PET扫描，以确定癌症扩散的程度，然后决定最佳治疗方案。这种个性化的方法增强了治疗的有效性，并减少了不必要的程序。然而，使用放射性示踪剂也有一些考虑因素。这些物质的辐射暴露虽然通常较低且被认为是安全的，但仍然是需要管理的因素。医疗提供者必须确保使用放射性示踪剂的好处超过与辐射暴露相关的潜在风险。这涉及到患者和所使用的放射性示踪剂类型的仔细选择，以及在成像过程中遵循安全协议。总之，放射性示踪剂的出现显著增强了现代医学的能力，特别是在诊断和治疗规划领域。通过允许对生理过程进行实时可视化，放射性示踪剂已成为早期发现和管理各种健康状况不可或缺的工具。随着技术的进步，我们可以期待未来在放射性示踪剂的应用方面会有更多创新，进一步改善患者的治疗效果，扩展我们对人类健康的理解。