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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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相关实验视频

Updated: May 15, 2025

Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis
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编码的MR-Cavitation动力学 (MR-CaDE) 图像成像

Dinank Gupta1, Tarana P Kaovasia1, Steven P Allen2

  • 1Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.

Magnetic resonance in medicine
|April 8, 2025
PubMed
概括
此摘要是机器生成的。

这项研究开发了MR-Cavitation Dynamics Encoded (MR-CaDE) 成像技术,用于监测脑组织缩治疗. 这种新方法成功地跟踪了化事件,显示了它对实时治疗指导的可行性.

关键词:
大脑大脑大脑的大脑大脑洞化 洞化 洞化聚焦式超声波的使用梯度回声回声是一个梯度回声.基因组三症 基因组三症

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相关实验视频

Last Updated: May 15, 2025

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05:31

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科学领域:

  • 医疗成像医学成像
  • 神经外科 神经外科
  • 声学物理 声学物理

背景情况:

  • 基因组是使用聚焦超声波的非侵入性机械除技术.
  • 监测腔腔动态对于优化组织缩治疗至关重要.
  • 现有的方法缺乏精确脑干预所需的实时反.

研究的目的:

  • 开发和验证用于动态化监测的MR-Cavitation Dynamics Encoded (MR-CaDE) 成像技术.
  • 评估MR-CaDE的可行性,以实时监测大脑中的组织缩治疗.
  • 在临床核磁共振扫描仪内在活体人类大脑模型上测试该技术.

主要方法:

  • 修改了带有双极梯度的梯度回声 (GRE) 脉冲序列,以创建MR-CaDE成像.
  • 在3T核磁共振扫描仪上使用MR-CaDE在ex-vivo牛脑组织中监测组织缩诱导的空洞化.
  • 使用0.5秒的时间分辨率与螺旋读数和同步的MRI采集与组织缩脉冲.

主要成果:

  • MR-CaDE成功地可视化了化动态,显示图像大小下降和相位随着超声波增加而增加.
  • 观察到峰值幅度损失为50%,最大相位增加为0.64rad.
  • 史发后的病变与MR-CaDE信号变化保持良好对齐,空间误差最小.

结论:

  • 证明了MR-CaDE脉冲序列用于监测洞穴的可行性.
  • 开发的方法显示了大脑中基因缩治疗期间实时反的前景.
  • 通过MR-CaDE,可以动态监测腔位,从而提高了超声波导向神经外科手术的精度.