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相关概念视频

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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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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
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相关实验视频

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一种可适应的多平行代方法,用于加速实时磁粒子成像重建.

Yusong Shen1, Liwen Zhang2,3,4, Yaxin Shang5

  • 1School of Computer Science and Engineering, Southeast University, Nanjing, People's Republic of China.

Physics in medicine and biology
|October 27, 2023
PubMed
概括

我们开发了一种新的并行方法用于磁粒子成像 (MPI) 重建,显著加快图像生成. 这种自适应的多平行代方法 (AMPIM) 实现了实时MPI成像,具有高率和更好的图像质量.

关键词:
磁性颗粒成像技术 磁性粒子成像技术平行计算的平行计算.平行代方法是一种平行代方法.实时重建的重建.

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科学领域:

  • 医疗成像医学成像
  • 计算成像技术的成像
  • 生物物理学的生物物理.

背景情况:

  • 实时磁粒子成像 (MPI) 对于临床应用至关重要.
  • 当前的串行代重建方法引入了显著的延迟.
  • 需要更快的重建技术来实现实时MPI.

研究的目的:

  • 开发一种并行方法来加速实时MPI重建.
  • 为了减少MPI图像重建中的延迟,以获得临床可行性.
  • 为了提高MPI重建算法的计算效率.

主要方法:

  • 提出了适应式多平行代方法 (AMPIM) 用于平行处理多信号.
  • 实施了并行计算的加速策略,以提高AMPIM的效率.
  • 使用OpenMPIData数据集对AMPIM进行了评估.

主要成果:

  • 与流行的代算法相比,AMPIM提高了每秒重建率两倍.
  • 在重建图像中实现了高对比度与噪声比率.
  • 通过AMPIM方法来证明图像工件的减少.

结论:

  • 通过并行化,AMPIM有效地优化了多个右边的最小平方问题.
  • 该方法显示了高率,实时MPI成像的巨大潜力.
  • AMPIM为MPI的临床应用提供了实质性的进步.