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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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Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
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相关实验视频

Updated: Sep 20, 2025

Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom Mapping
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Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom Mapping

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大脑MRI上的"无数"病变负担 - 一种诊断方法.

Pasquale F Finelli1,2

  • 1Department of Neurology, 156165 Hartford Hospital and University of Connecticut School of Medicine , Hartford, CT, USA.

Diagnosis (Berlin, Germany)
|May 26, 2025
PubMed
概括

在MRI上,无数的大脑病变是罕见的,但可以诊断出来. 识别风险因素和特定的MRI序列有助于为这些具有挑战性的病例创建诊断算法.

科学领域:

  • 神经辐射学神经辐射学
  • 神经成像是一种神经成像.
  • 诊断辐射学 诊断辐射学

背景情况:

  • 在脑MRI上,术语"无数"意味着一种罕见且在诊断上具有挑战性的损伤负担.
  • 缺乏对大脑MRI成像发现的系统研究,这些发现被描述为"无数".

研究的目的:

  • 在MRI上确定与无数脑损伤相关的危险因素.
  • 在无数脑损伤的情况下,为诊断算法识别有用的MR成像序列.

主要方法:

  • 对12495个脑部MRI成像研究进行了回顾性审查.
  • 包含了50个或更多瘤病变的研究,并包括了"无数"一词.
  • 根据MR和临床特征,患者被分为活跃和慢性组.

主要成果:

  • 31项研究符合纳入标准,其中有19项是活性过程,12项是慢性过程.
  • 活跃组主要包括转移 (9),心脏病发作 (6) 和微型血液 (2).
  • 恶性病和免疫抑制被确定为关键风险因素.

结论:

  • 在MRI上的活跃无数脑病变发生在0.25%的研究中.
关键词:
核磁共振成像 (MRI) 的成像诊断算法 诊断算法无数的病变,无数的病变.有关风险因素的风险因素.

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  • 转移和心脏病发作是活跃组中最常见的原因,通过特定的MRI序列确定.
  • 结合MR特征和风险因素的诊断算法可以指导脑活检决策.