transverse magnetization

简明释义

横向磁化

英英释义

例句

1.The decay of transverse magnetization over time is known as T2 relaxation.

横向磁化随时间的衰减被称为T2弛豫。

2.During a pulse sequence, the technician must carefully monitor the transverse magnetization to ensure accurate results.

在脉冲序列期间，技术员必须仔细监测横向磁化以确保结果的准确性。

3.In MRI, the process of creating images relies heavily on the manipulation of transverse magnetization.

在MRI中，创建图像的过程严重依赖于对横向磁化的操控。

4.Understanding the principles of transverse magnetization can help improve diagnostic capabilities in radiology.

理解横向磁化的原理可以帮助提高放射学的诊断能力。

5.The recovery of transverse magnetization is crucial for obtaining high-quality images in magnetic resonance imaging.

横向磁化的恢复对于获得高质量的磁共振成像图像至关重要。

作文

In the field of magnetic resonance imaging (MRI), understanding the concept of transverse magnetization is crucial for both technicians and medical professionals. Transverse magnetization refers to the component of the net magnetization vector that lies in the plane perpendicular to the main magnetic field. This phenomenon occurs when the protons in the body are subjected to a radiofrequency pulse, causing them to move from their equilibrium position along the longitudinal axis to a state where they precess in the transverse plane. The significance of transverse magnetization can be observed during MRI scans. When the radiofrequency pulse is applied, it tips the net magnetization away from the longitudinal direction. As the protons return to their equilibrium state, they release energy in the form of radio waves, which are detected by the MRI machine. The time it takes for this energy to be released is known as T2 relaxation time, and it is directly related to the amount of transverse magnetization present at any given moment.One of the key aspects of transverse magnetization is its role in creating contrast in MRI images. Different tissues in the body have varying T2 relaxation times, which means that they will exhibit different amounts of transverse magnetization over time. For instance, fluid-filled structures like cysts will typically have longer T2 times compared to solid tumors. This difference allows radiologists to distinguish between various types of tissues, aiding in diagnosis and treatment planning.Moreover, the manipulation of transverse magnetization can enhance image quality. Techniques such as spin echo and gradient echo sequences rely heavily on the principles of transverse magnetization. In spin echo sequences, a 90-degree pulse is followed by a 180-degree pulse, which refocuses the transverse magnetization and helps to produce clearer images with reduced artifacts. Understanding how to control and measure transverse magnetization is essential for optimizing these imaging protocols.In addition to its importance in clinical settings, transverse magnetization is also a topic of interest in research. Scientists are continuously exploring the implications of transverse magnetization in various applications, including functional MRI, which measures brain activity by detecting changes in blood flow. By analyzing the transverse magnetization associated with different regions of the brain, researchers can gain insights into neural processes and potentially identify biomarkers for neurological disorders.In conclusion, the concept of transverse magnetization is fundamental to the practice of MRI. It not only plays a vital role in image formation and tissue characterization but also opens avenues for research in medical science. A comprehensive understanding of transverse magnetization enables healthcare professionals to utilize MRI technology effectively, ultimately leading to better patient outcomes. As the field of medical imaging continues to evolve, the principles surrounding transverse magnetization will undoubtedly remain a cornerstone of diagnostic imaging techniques.

在磁共振成像（MRI）领域，理解横向磁化的概念对技术人员和医疗专业人士至关重要。横向磁化是指净磁化矢量在主磁场垂直平面内的分量。当身体中的质子受到射频脉冲的作用时，这种现象就会发生，导致它们从沿纵向轴的平衡位置移动到在横向平面中进动的状态。横向磁化的重要性可以在MRI扫描中观察到。当施加射频脉冲时，它使净磁化从纵向方向倾斜。当质子返回到其平衡状态时，它们以无线电波的形式释放能量，这些能量被MRI机器检测到。释放这些能量所需的时间称为T2松弛时间，它与任何给定时刻存在的横向磁化量直接相关。横向磁化的一个关键方面是它在MRI图像中创造对比度的作用。身体中的不同组织具有不同的T2松弛时间，这意味着它们在一段时间内会表现出不同数量的横向磁化。例如，充满液体的结构如囊肿通常具有比实体肿瘤更长的T2时间。这种差异使放射科医生能够区分各种类型的组织，从而帮助诊断和治疗计划。此外，操控横向磁化可以提高图像质量。诸如自旋回波和梯度回波序列等技术在很大程度上依赖于横向磁化的原理。在自旋回波序列中，90度脉冲后跟随180度脉冲，这将重新聚焦横向磁化，并有助于产生更清晰的图像，减少伪影。理解如何控制和测量横向磁化对于优化这些成像协议至关重要。除了在临床环境中的重要性外，横向磁化也是研究中的一个兴趣主题。科学家们不断探索横向磁化在各种应用中的意义，包括功能性MRI，该技术通过检测血流变化来测量大脑活动。通过分析与大脑不同区域相关的横向磁化，研究人员可以深入了解神经过程，并可能识别神经疾病的生物标志物。总之，横向磁化的概念是MRI实践的基础。它不仅在图像形成和组织表征中发挥着重要作用，而且为医学研究开辟了新的途径。全面理解横向磁化使医疗专业人员能够有效利用MRI技术，最终改善患者的结果。随着医学成像领域的不断发展，围绕横向磁化的原理无疑将继续成为诊断成像技术的基石。