contrast radiography

简明释义

对比射线照相法

英英释义

例句

1.The results from the contrast radiography showed a blockage in the patient's arteries.

来自对比放射摄影的结果显示患者的动脉有阻塞。

2.Before the contrast radiography, the patient was asked to fast for several hours.

在进行对比放射摄影之前，患者被要求禁食几个小时。

3.The doctor recommended contrast radiography to get a clearer image of the patient's gastrointestinal tract.

医生建议进行对比放射摄影以更清晰地查看病人的消化道。

4.During contrast radiography, a special dye is injected to enhance the visibility of certain organs.

在进行对比放射摄影时，会注射一种特殊染料以增强某些器官的可见性。

5.For accurate diagnosis, contrast radiography is often preferred over standard X-rays.

为了准确诊断，通常更喜欢使用对比放射摄影而不是标准X光。

作文

In the field of medical imaging, various techniques are employed to visualize the internal structures of the body. One such method is contrast radiography, which plays a crucial role in diagnosing various conditions. This technique involves the use of contrast agents that enhance the visibility of specific organs or tissues during an X-ray examination. By providing a clearer picture, contrast radiography allows healthcare professionals to make more accurate diagnoses and treatment plans.The principle behind contrast radiography is relatively straightforward. When a contrast agent, often containing iodine or barium, is introduced into the body, it absorbs X-rays differently than surrounding tissues. This differential absorption creates a stark contrast on the X-ray images, highlighting areas of interest such as blood vessels, the gastrointestinal tract, or other hollow organs. For instance, when barium sulfate is ingested for a gastrointestinal study, it coats the lining of the digestive tract, making it visible against the surrounding tissues.One of the most common applications of contrast radiography is in the evaluation of the gastrointestinal system. Conditions such as ulcers, tumors, or blockages can be effectively diagnosed using this method. A patient may undergo a barium swallow or barium enema procedure, where the contrast medium is either swallowed or introduced rectally to provide detailed images of the esophagus, stomach, and intestines. The resulting images enable physicians to identify abnormalities and determine appropriate treatment options.Another significant use of contrast radiography is in vascular imaging. Angiography, a procedure that visualizes blood vessels, relies heavily on this technique. By injecting a contrast dye directly into the bloodstream, doctors can obtain detailed images of arteries and veins, allowing them to diagnose conditions like aneurysms, blockages, or vascular malformations. This information is vital for planning surgical interventions or other treatments.While contrast radiography is an invaluable tool in modern medicine, it is not without risks. Some patients may experience allergic reactions to the contrast agents, particularly iodine-based ones. Therefore, healthcare providers must carefully assess each patient’s medical history before administering these substances. Additionally, there are considerations regarding radiation exposure, although the benefits of obtaining critical diagnostic information often outweigh the risks involved.In conclusion, contrast radiography is a powerful imaging technique that enhances the visualization of internal structures within the body. Its application spans various medical fields, from gastroenterology to vascular surgery. As technology advances, the methods and materials used in contrast radiography continue to improve, leading to even greater diagnostic capabilities. Understanding this technique is essential for both healthcare professionals and patients alike, as it plays a pivotal role in the early detection and treatment of numerous medical conditions.

在医学影像学领域，采用多种技术来可视化身体内部结构。其中一种方法是对比放射学，它在诊断各种疾病中发挥着至关重要的作用。这种技术涉及使用对比剂，在X光检查中增强特定器官或组织的可见性。通过提供更清晰的图像，对比放射学使医疗专业人员能够制定更准确的诊断和治疗计划。对比放射学的原理相对简单。当对比剂（通常含有碘或钡）被引入体内时，它对X光的吸收与周围组织不同。这种差异吸收在X光图像上产生鲜明的对比，突显出感兴趣的区域，如血管、消化道或其他空腔器官。例如，当钡硫酸盐用于消化系统研究时，它会涂覆在消化道的内壁上，使其在周围组织中可见。对比放射学最常见的应用之一是在评估消化系统方面。诸如溃疡、肿瘤或阻塞等疾病可以有效地通过这种方法进行诊断。患者可能会接受钡吞咽或钡灌肠程序，其中对比介质要么被吞下，要么通过直肠引入，以提供食道、胃和肠道的详细图像。生成的图像使医生能够识别异常情况并确定适当的治疗方案。对比放射学的另一个重要用途是在血管成像中。血管造影是一种高度依赖于此技术的程序，通过直接将对比染料注入血液，医生可以获得动脉和静脉的详细图像，从而诊断动脉瘤、阻塞或血管畸形等情况。这些信息对于规划外科干预或其他治疗至关重要。虽然对比放射学在现代医学中是一种宝贵的工具，但它并非没有风险。一些患者可能会对对比剂（特别是基于碘的对比剂）产生过敏反应。因此，医疗提供者必须在施用这些物质之前仔细评估每位患者的病史。此外，还有关于辐射曝光的考虑，尽管获取关键诊断信息的好处通常超过了相关风险。总之，对比放射学是一种强大的成像技术，增强了对身体内部结构的可视化。它的应用跨越多个医学领域，从胃肠病学到血管外科。随着技术的进步，对比放射学中使用的方法和材料不断改进，从而带来更大的诊断能力。了解这一技术对医疗专业人员和患者都至关重要，因为它在众多医疗条件的早期发现和治疗中起着关键作用。