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Hepatic Encephalopathy01:29

Hepatic Encephalopathy

DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...

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Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
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在最小的肝脑病变中皮层微结构变化:基于灰质的空间统计学研究.

Hui-Wei Huang1, Jing-Yi Zeng1, Ying Tang2

  • 1Department of Radiology, Fujian Medical University Union Hospital, Fuzhou, China.

Quantitative imaging in medicine and surgery
|July 29, 2025
PubMed
概括
此摘要是机器生成的。

最小的肝脑病变 (MHE) 与大脑变化有关. 这项研究发现MHE患者皮质神经元密度降低,与认知缺陷相关,为MHE提供了洞察力.

关键词:
最小的肝脏脑病变 (MHE)认知 认知 认知皮层微观结构的皮层微观结构基于灰色物质的空间统计 (GBSS)神经元的定向分散和密度成像 (NODDI)

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科学领域:

  • 神经成像是一种神经成像.
  • 神经科学是一个神经科学.
  • 医学物理 医学物理

背景情况:

  • 最小的肝脑病变 (MHE) 与大脑结构的改变有关.
  • 研究皮质微结构变化对于理解MHE病理生理学至关重要.

研究的目的:

  • 用先进的神经成像技术研究MHE的皮质微结构异常.
  • 为了将这些异常与MHE患者的认知障碍相关联.

主要方法:

  • 利用神经元定向分散和密度成像 (NODDI) 和基于灰色物质的空间统计 (GBSS).
  • 从健康对照组 (HC),没有MHE (NHE) 的肝硬化患者和MHE患者获得的多扩散权重磁共振成像 (dMRI) 数据.
  • 评估NODDI指标 (NDI,ODI) 和它们与认知表现 (PHES) 的关系.

主要成果:

  • MHE患者在各种皮质区域,包括默认模式网络 (DMN) 区域,表现出神经元密度指数 (NDI) 的下降.
  • 减少NDI的地区在MHE患者中比NHE患者更广泛.
  • 在特定区域较低的NDI与较差的认知分数 (PHES) 相关联.

结论:

  • 这项研究提供了证据,证明MHE中的皮质神经元微结构调节.
  • 这些发现提高了对MHE相关认知障碍背后的生物学基础的理解.