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相关概念视频

Accuracy, limits, and approximation01:28

Accuracy, limits, and approximation

Accuracy, limits, and approximations are common in many fields, especially in engineering calculations. These concepts are imperative for ensuring that a given value is as close as possible to its true value.
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...
Finding Volume Using Cross-Sectional Area01:24

Finding Volume Using Cross-Sectional Area

For solids whose cross-sectional areas vary in a predictable way, volume can be determined by integrating these areas along an axis perpendicular to the slices. This approach is particularly useful for polyhedral solids, where classical geometric formulas may not be immediately applicable. A tetrahedron provides a clear example of how cross-sectional integration can be applied to a three-dimensional object with continuously changing geometry.Consider a tetrahedron with height h and a base that...

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相关实验视频

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使用多截断的金字塔形状模拟ACL体积测量

Takanori Iriuchishima1, Bunsei Goto1

  • 1Department of Orthopedic Surgery, Kamimoku Spa Hospital, Minakami, Japan.

Indian journal of orthopaedics
|November 27, 2023
PubMed
概括

这项研究测量了前交叉带 (ACL) 的体积,使用一种新的MRI扫描上的金字塔模拟. 结果显示,ACL体积和膝关节骨形态之间存在相关性,有助于伤害预测.

科学领域:

  • 整形外科手术 整形外科手术
  • 放射学 放射学是一门学科.
  • 人体解剖学 解剖学 解剖学

背景情况:

  • 对前十字带 (ACL) 解剖学的详细知识对于理解膝盖生物力学至关重要.
  • 以前用于ACL体积测量的方法可能缺乏简单性或效率.
  • 磁共振成像 (MRI) 提供了膝盖的详细解剖可视化.

研究的目的:

  • 测量前十字带 (ACL) 的体积,使用一种新的多截断的金字塔形状模拟.
  • 使用轴性磁共振成像 (MRI) 进行详细的ACL解剖评估.
  • 探索ACL体积和膝关节骨形态之间的关系.

主要方法:

  • 包括50名膝盖疼痛但没有结构性MRI损伤的受试者.
  • 使用轴性MRI图像来测量四个水平的ACL截面面积和ACL高度.
  • 使用多截断的金字塔模拟计算了ACL体积;还测量了股骨间隙尺寸和跨表皮层长度 (TEL).

主要成果:

  • 计算的ACL体积为1755±874mm3. 这样就算是1755±874mm3.
  • 在ACL体积和大腿骨间隙高度,面积和TEL之间发现了显著的相关性.
  • 量化了ACL截面面积和高度,提供了详细的解剖数据.
关键词:
人体解剖学 解剖学 解剖学前交叉带前交叉带前十字带的重建前十字带的重建在这个过程中,数量,体积,体积.

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结论:

  • 多截断的金字塔模拟提供了一种简单而有效的方法,用于从轴向MRI测量ACL体积.
  • 在ACL体积和膝关节骨形态之间存在显著的相关性.
  • 精确的ACL体积测量可以提高解剖学知识,并有助于预测和预防ACL损伤.