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相关概念视频

Isotonic and Isometric Muscle Contractions01:22

Isotonic and Isometric Muscle Contractions

3.0K
Two primary types of muscle contractions are isotonic and isometric, each serving unique functions and involving distinct mechanisms. Both isotonic and isometric contractions are integral to the body's complex system of movement and stability. Isotonic exercises contribute significantly to functional strength and movement, while isometric contractions are crucial for maintaining posture and joint stability.
Isotonic contractions
Isotonic contractions occur when a muscle changes length while...
3.0K
Three-Dimensional Force System01:30

Three-Dimensional Force System

2.0K
In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
2.0K
Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

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A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
660
Two-Dimensional Force System01:20

Two-Dimensional Force System

896
A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
896
Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

561
Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
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Ultrasonography01:17

Ultrasonography

4.4K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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相关实验视频

Updated: Jun 21, 2025

Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies
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Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies

Published on: January 31, 2013

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SonoMyoNet:一种卷积神经网络,用于从极为稀疏的超声图像中预测同度力.

Anne Tryphosa Kamatham1, Meena Alzamani2, Allison Dockum2

  • 1Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi 110016 India.

IEEE transactions on human-machine systems
|July 8, 2024
PubMed
概括

这项研究介绍了SonoMyoNet,一个卷积神经网络 (CNN),使用稀疏的超声波扫描线准确估计肌肉力量. 这种方法在计算上是高效和强大的,即使数据点有限.

关键词:
卷积神经网络 (CNN) 是一种神经网络.估计力量的估计.声谱学 (sonomyography) 是一种声谱学 (sonomyography) 的方法.

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A Novel Application of Musculoskeletal Ultrasound Imaging
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A Novel Application of Musculoskeletal Ultrasound Imaging

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3D Ultrasound Imaging: Fast and Cost-effective Morphometry of Musculoskeletal Tissue

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相关实验视频

Last Updated: Jun 21, 2025

Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies
14:10

Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies

Published on: January 31, 2013

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A Novel Application of Musculoskeletal Ultrasound Imaging
10:53

A Novel Application of Musculoskeletal Ultrasound Imaging

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3D Ultrasound Imaging: Fast and Cost-effective Morphometry of Musculoskeletal Tissue
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3D Ultrasound Imaging: Fast and Cost-effective Morphometry of Musculoskeletal Tissue

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科学领域:

  • 生物医学工程 生物医学工程
  • 肌肉骨成像系统的成像
  • 医疗保健中的机器学习

背景情况:

  • 超声波成像 (声微图) 与表面电微图相比,提供了优越的肌肉活动测量.
  • 从超声数据中量化肌肉变化是计算密集的,通常需要复杂的特征跟踪.
  • 现有的方法与根深蒂固的肌肉作斗争,需要大量的数据处理.

研究的目的:

  • 从稀疏的超声数据开发一种计算效率高的方法来估计连续的同度肌肉力.
  • 介绍SonoMyoNet,一个卷积神经网络 (CNN) 用于肌肉力量估计.
  • 使用不同数量的超声波扫描线来评估SonoMyoNet的性能.

主要方法:

  • 使用了一个名为SonoMyoNet.Net的离线回归卷积神经网络 (CNN).
  • 训练有素的SonoMyoNet可以学习稀疏,均间的B模式超声波扫描线的特征.
  • 通过模拟不同数量的单元超声传感器来评估网络性能.

主要成果:

  • SonoMyoNet使用四个扫描线准确估计了连续的同位体力.
  • 该网络证明了对斑点噪声和扫描线定位变化的稳定性.
  • 与传统的特征跟踪算法相比,显著减少了计算负载.

结论:

  • SonoMyoNet提供了一种准确且计算效率高的方法,可以从稀疏的超声图像中估计肌肉力量.
  • 该方法对可穿戴系统和非侵入性肌肉力量监测具有前景.
  • 从稀疏的超声数据中提取全局特征是有效的肌肉力量量化.