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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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Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
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一种基于磁粒子成像中的笛卡尔轨迹的系统功能交换拼接成像方法.

Pengyu Huang, Jie He, Zhongwei Bian

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
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    此摘要是机器生成的。

    磁粒子成像 (MPI) 提供高灵敏度,但面临着轨迹和重建的挑战. 使用单向笛卡儿轨迹的新型Swapping Stitching SM (SSSM) 方法通过单次校准实现同位素成像,提高性能.

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    科学领域:

    • 医疗成像医学成像
    • 生物医学工程 生物医学工程
    • 物理 物理学 物理

    背景情况:

    • 磁粒子成像 (MPI) 是一种敏感的医学成像技术.
    • 目前的系统矩阵 (SM) 重建方法由于扫描轨迹存在局限性.
    • 优化轨迹和重建对于MPI性能至关重要.

    研究的目的:

    • 为MPI引入一种新的重建方法.
    • 在系统矩阵重建中解决现有轨迹的局限性.
    • 为了证明在特定轨迹下系统函数的不变性.

    主要方法:

    • 开发了一个Swapping Stitching SM (SSSM) 重建方法.
    • 在MPI中使用了单向的笛卡尔轨迹.
    • 在无场点 (FFP) 笛卡尔轨迹下证明了系统函数不变性.

    主要成果:

    • 在SSSM方法保持高灵敏度的笛卡尔轨迹.
    • 通过拟议的方法实现同位素成像能力.
    • 消除了对多个SM校准的需求,只需要一次校准.

    结论:

    • SSSM方法为MPI重建提供了一种改进的方法.
    • 单向卡特西安轨迹与SSSM相结合,提高了成像性能.
    • 这种方法简化了校准,并保持了MPI的高灵敏度.