2018年9月25日 · Magnetic resonance imaging (MRI) is a non-invasive medical technology that produces images of the body’s interior anatomy. These images are like camera snapshots, capturing single moments in time. A functional MRI (fMRI) is a more sophisticated type of MRI that creates a dynamic record of metabolic activities over time.

MRI 和 fMRI 都是医学领域中应用于各种目的的重要成像方法。 fMRI 主要用于研究目的，以研究大脑功能和活动，而 MRI 主要用于诊断目的，以提供人体内部结构（例如大脑、脊柱和关节）的全面结构图像。

想要获得大脑活动的图像，这就需要使用fMRI的技术了。 什么是fMRI (功能磁共振成像 呢)呢？ 如果一个人想移动他的右臂，则需要做一些事情：他的大脑的某些部分将增加其活动能力，发送消息以完成这个动作，而大脑的该区域将会接收到比以前稍微多的富含氧气的血液。 对于fMRI而言，同样的事情发生在MRI上-测量质子弛豫释放的能量 - 但计算的目的是确定含氧血流量的变化情况。 如果大脑的一个部位比其他部位有更多的含氧血液，那么大脑的这个区域可能更活跃。 这被称 …

Functional MRI (fMRI) is a type of MRI scan that can track blood flow to “see” brain activity. It’s most often used for planning brain surgery and other procedures.

Functional Magnetic Resonance Imaging (fMRI) is a class of imaging methods developed in order to demonstrate regional, time-varying changes in brain metabolism 3,37,49. These metabolic changes can be consequent to task-induced cognitive state changes or the result of unregulated processes in the resting brain.

In general, an MRI and fMRI differ from each other in a way that an MRI views the anatomical structure while an fMRI views the metabolic function. In addition, the measurement of signals is different for an MRI and an fMRI individually. An MRI studies the water molecule’s hydrogen nuclei whereas an fMRI calculates the levels of oxygen.

Exploring the distinctions between MRI and fMRI further, it’s vital to understand how each type of imaging contributes uniquely to medical diagnostics. This section focuses on illuminating this contrast by detailing how MRI provides structural imaging while fMRI captures functional data.

2023年12月8日 · Key Takeaways: MRI uses strong magnetic fields and radio waves to create detailed images of organs and structures throughout the body. fMRI measures blood flow changes in the brain to assess brain function and detect structural abnormalities. MRI is used for a wide range of medical conditions, while fMRI primarily focuses on brain function.

2021年5月29日 · MRI (Magnetic Resonance Imaging) uses magnetic fields and radio waves to produce detailed images of internal body structures, while fMRI (Functional Magnetic Resonance Imaging) measures changes in blood flow to detect brain activity.

Magnetic Resonance Imaging (MRI) An MRI is a painless, non-invasive and a safe medical procedure. An MRI or fMRI is a fast, efficient and highly detailed, and a very valuable diagnostic tool that can help the doctor accurately assess and effectively treat a wide range of medical conditions. Functional Magnetic Resonance Imaging (fMRI)