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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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Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
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使用直立磁共振成像测量部形态

Narayan Yoganandan1,2, Mahmudur Rahman1, Ali Warriach1

  • 1Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, United States.

Military medicine
|September 23, 2025
PubMed
概括

军事飞行员有不同的部肌肉形态,这是由于头部支的质量. 这些直立的MRI发现对于在军事场景中准确的宫脊柱负荷计算模型至关重要.

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科学领域:

  • 生物力学 生物力学
  • 人体解剖学 解剖学 解剖学
  • 航空航天医学 航空航天医学

背景情况:

  • 军用飞行员使用头部支质量,增加头部复合体的负荷.
  • 宫肌肉的准确形态特征对于头模型至关重要.
  • 垂直磁共振成像 (MRI) 是最佳的量化这些属性在轴承负载下.

研究的目的:

  • 确定军事飞行员部肌肉的形态特性.
  • 为了在相关人群中使用直立MRI进行精确的测量.

主要方法:

  • 从威斯康星州空军国民警卫队招募军事飞行员.
  • 在中立坐姿中获得T1和T2加权的直立MRI.
  • 测量截面面积,半径和硬骨肌和梯形肌 (C2-C7) 的角度.

主要成果:

  • 七名男性飞行员 (平均年龄38岁) 根据脊柱水平显示出不同的肌肉横截面区域.
  • 肌肉半径是水平依赖的,角角增加了尾部.
  • 形态数据为飞行员的肌肉变异提供了洞察力.

结论:

  • 肌肉形态的变化会在各种负载条件下影响脊柱负载的分担.
  • 数据支持计算建模,用于量化细分力和应力-应变模式.
  • 这些发现适用于军事人员和装载场景.