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相关概念视频

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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

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Blood Flow Imaging with Ultrafast Doppler
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使用连贯空间成像量化组织特性和绝对血液动力学.

Christian Crouzet1, Cody E Dunn1,2, Bernard Choi1,2,3,4

  • 1University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States.

Journal of biomedical optics
|December 20, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了连贯空间成像 (CSI),这是一个负担得起的光学技术,用于测量血动力学参数,如血流和血红蛋白度. CSI提供了全面的生理数据,有可能改善健康评估.

关键词:
血液的流动,血液的流动.扩散光学是一种扩散光学.血红蛋白的度 血红蛋白的度它们具有光学特性.

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科学领域:

  • 生物医学光学 生物医学光学
  • 生理监测 生理监测
  • 光学成像技术的成像

背景情况:

  • 准确的血液动力学监测对于健康评估至关重要.
  • 目前用于绝对血红蛋白度的光学方法往往昂贵且庞大.
  • 斑点性血压图 (SPG) 为光学血液动力学测量提供了一个有前途的途径.

研究的目的:

  • 开发一种负担得起的光学技术,用于测量组织吸收,散射,血红蛋白度,组织氧和和血液流动.
  • 创建一个新的系统,整合反射光谱和激光光斑成像.
  • 根据既有光学技术验证新系统的有效性.

主要方法:

  • 连贯空间成像 (CSI) 是通过整合反射光谱和激光光斑成像来开发的.
  • 基于幻影的测量验证了CSI与空间频域成像 (SFDI) 相比.
  • 在体内封闭实验中,CSI与扩散光谱/扩散相关谱 (DOS/DCS) 进行了比较.

主要成果:

  • 关于幻影的组织光学特性,CSI与SFDI达成一致.
  • 在动脉封闭期间,CSI和DOS/DCS显示出血液动力学参数的可比趋势.
  • 这两种方法都表明静脉封闭期间血液流量减少,但存在微小的差异.

结论:

  • 连贯空间成像 (CSI) 为全面的血液动力学评估提供了具有成本效益的解决方案.
  • CSI技术有可能改善血压,氧和和新陈代谢的测量.
  • 这种负担得起的光学技术可以帮助检测生理功能障碍.