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相关概念视频

Magnetic Resonance Imaging01:24

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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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Use of Ultra-high Field MRI in Small Rodent Models of Polycystic Kidney Disease for In Vivo Phenotyping and Drug Monitoring
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使用高级扩散MRI探测脏微观结构和功能:概念,应用,挑战和未来方向

Julia Stabinska1,2, Hans-Jörg Wittsack3, Lilach O Lerman4,5

  • 1F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.

Journal of magnetic resonance imaging : JMRI
|November 22, 2023
PubMed
概括

先进的扩散权重成像 (DWI) 技术可以比标准的显微扩散系数 (ADC) 模型更好地评估功能. 这些方法捕捉复杂的生理过程,以更好地了解脏的微观结构和疾病.

关键词:
扩散曲解成像 扫描图像扩散张力成像的成像方法在intravoxel不连贯的运动.脏 脏 脏是什么?非高斯扩散的非高斯扩散用扩散加权成像进行脏扩散成像.

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科学领域:

  • 腎臟病學 (nephrology) 是一種醫學專業.
  • 放射学 放射学是一门学科.
  • 生物医学工程 生物医学工程

背景情况:

  • 扩散MRI受微观结构和生理过程的影响,如过和再吸收.
  • 标准的表面扩散系数 (ADC) 模型在评估脏病理生理学方面存在局限性,原因是叠加的扩散, perfusion 和 flow.
  • 这就需要先进的扩散权重成像 (DWI) 变种来进行全面的评估.

研究的目的:

  • 提供关于脏DWI近期进展的全面审查.
  • 突出脏DWI数据采集和分析的方法方法.
  • 概述了先进的脏DWI技术的临床应用.

主要方法:

  • 复习先进的DWI模型,包括intravoxel不连贯运动 (IVIM),扩散张力成像 (DTI) 和非高斯扩散.
  • 讨论混合IVIM-DTI方法的讨论.
  • 探索实验参数如何调整DWI的探测长度尺度.

主要成果:

  • 先进的DWI模型可以捕捉被动扩散,微循环,细分和组织异构.
  • 与传统的ADC模型相比,这些技术提供了对组织的更细致的理解.
  • 慢性病和异位移植功能障碍的应用正在出现.

结论:

  • 先进的脏DWI方法对于克服传统技术的局限性至关重要.
  • 需要进一步开发才能充分发挥这些先进的成像模式的潜力.
  • 脏DWI有望改善脏疾病的诊断和管理.