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相关概念视频

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
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相关实验视频

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Author Spotlight: Segmentation and VR for Advanced Neurovascular Interventions
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镜头偏角是否会影响腹腔镜摄像头的导航?

Yi Luo1, Ziyan Chen2,3, Bin Luo3,4

  • 1Urology Department, Xiaogan First People's Hospital, Xiaogan, China.

Journal of laparoendoscopic & advanced surgical techniques. Part A
|December 9, 2024
PubMed
概括

新手腹腔镜外科医生在摄像头导航方面扎,导致水平轴的显著偏移. 专注于这种偏斜角度的训练可以提高腹腔镜手术中的技能和患者安全.

关键词:
摄像机的水平轴是相机的水平轴.倾斜角度的偏斜角度是什么?一个倾斜度计的倾斜度计.腹腔镜摄像头导航系统的导航腹腔镜培训培训 腹腔镜培训

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科学领域:

  • 手术技术 手术技术
  • 医疗培训 医学培训
  • 腹腔镜外科手术 腹腔镜外科手术

背景情况:

  • 保持稳定的摄像头视图在腹腔镜手术中至关重要.
  • 缺乏经验的外科医生经常面临着相机导航方面的挑战,这会影响外科手术的精度.
  • 一个30度镜头,虽然提供了更广的视角,但使保持相机的水平轴变得复杂.

研究的目的:

  • 为腹腔镜摄像头导航 (LCN) 开发一个评估和培训系统.
  • 评估基于偏斜角度的系统在外科训练中的价值.
  • 为了量化新手和熟练外科医生之间摄像头水平轴控制的差异.

主要方法:

  • 招募了15名新手和15名熟练的外科医生参加LCN演习.
  • 使用一个倾斜计模块来测量相机的水平轴偏斜角度.
  • 在新手和熟练的外科小组之间比较的偏斜角度.

主要成果:

  • 与熟练的外科医生相比,新手的水平轴偏移明显更大 (例如,57.98%的>±15°),而熟练的外科医生 (>±15°的31.76%).
  • 在技能水平之间观察到,保持相机水平轴的显著差异.
  • 所有曲角值 (15°,30°,45°,60°) 在各组之间都显示出显著的差异.

结论:

  • 在LCN期间保持相机水平轴稳定性方面存在着显著的技能差距.
  • 专注于摄像头偏转角度的培训计划可以提高初学者外科医生的基本技能.
  • 该系统对改善腹腔镜手术培训和临床应用具有潜在价值.