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相关概念视频

Absolute Motion Analysis- General Plane Motion01:24

Absolute Motion Analysis- General Plane Motion

756
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
756

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相关实验视频

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Kinematic Analysis Using 3D Motion Capture of Drinking Task in People With and Without Upper-extremity Impairments
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通过使用深度学习和空间标记器跟踪进行运动分析来评估切割技能.

Bai-Quan Su, Xu-Dong Ma, Weihan Li

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    本研究介绍了用于开放外科手术技能评估的客观手术刀运动分析. 它使用五种新的指标量化切割精度,从而能够准确评估外科医生的熟练程度.

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    科学领域:

    • 外科手术技能的评估.
    • 生物力学 生物力学
    • 计算机视觉 计算机视觉

    背景情况:

    • 缺乏对开放外科手术技能的客观评估,依赖于主观的视觉观察.
    • 目前在开放程序中评估外科手术能力的方法往往不精确,缺乏标准化.
    • 运动分析在内镜手术中已经确立,但在开放手术中尚未被广泛采用.

    研究的目的:

    • 开发和验证一种新的方法,用于客观地评估开放外科手术中的切割技巧,使用刀运动分析.
    • 引入基于手术刀轨迹的定量指标来评估外科医生的能力.
    • 建立一个标准化的方法,对开放外科手术技能评估.

    主要方法:

    • 设计了一个3D多面面的ArUco代码立方体,用于跟踪刀运动.
    • 使用轴心校准和YOLOv8模型进行刀识别和尖端定位.
    • 转换的刀尖从ArUco代码坐标系统 (ACS) 转换为双眼相机坐标系统 (BCS),以定义切口曲线.
    • 提出了五个指标:平均切口曲率偏差,切口长度差异,切口终点偏差,平均切口偏差和平均切口冲动.

    主要成果:

    • 成功建立了手术刀尖姿势的数据集,并将其转化为切口曲线.
    • 证明了五个建议指标在量化切割技能的有效性.
    • 对20名外科医生的实验显示,专家和初学者技能水平之间存在客观差异.
    • 这些指标提供了个别切割技能和比较排名的清晰显示.

    结论:

    • 拟议的手术刀运动分析方法提供了一个精确而客观的方法来评估开放外科切割技巧.
    • 开发的指标提供了对外科医生的能力的定量见解,解决了主观评估的局限性.
    • 这项研究为在开放程序中对外科手术能力的标准化,数据驱动的评估奠定了基础.