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相关概念视频

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

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The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
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相关实验视频

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Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System
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Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System

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MRDust:通过磁共振图像调制实现无线数据升级和定位.

Biqi Rebekah Zhao, Alexander Chou, Robert Peltekov

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    此摘要是机器生成的。

    我们介绍了一种新的无线方法,用于从微型植入物中传输和定位数据,使用磁共振成像 (MRI). 该技术调节MRI信号,使数据同时读取和轻松跟踪设备.

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    相关实验视频

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    Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
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    科学领域:

    • 生物医学工程 生物医学工程
    • 医疗成像医学成像
    • 可植入的设备可以植入设备.

    背景情况:

    • 微型植入物需要高效的无线数据传输和本地化.
    • 磁共振成像 (MRI) 提供非侵入性成像,但在从小型内部设备实时采集数据方面面临挑战.

    研究的目的:

    • 开发一种无线数据上传和定位方法,用于使用MRI进行微型传感器植入.
    • 为了证明用集成电路 (IC) 微线圈调节局部MRI信号的可行性.

    主要方法:

    • 集成电路 (IC) 上的微线圈被设计为动态调节局部MRI信号.
    • 在3TMRI扫描仪中测试了一个概念验证芯片,以验证MR图像调制.
    • 该方法被评估为其在数据上链和设备定位方面的能力.

    主要成果:

    • 使用设计的芯片证明了MR图像的成功调制.
    • 拟议的方法有助于微型植入物的无线数据读取.
    • 实现了轻松的设备定位和内置图像注册.

    结论:

    • 开发的无线上联和本地化方法对微型传感器植入物非常有希望.
    • 这种技术可以同时从MRI扫描仪中的多个植入物获取数据.
    • 在IC上集成微线圈为先进的可植入传感器功能提供了一条途径.