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相关概念视频

Manipulation and Analysis01:21

Manipulation and Analysis

GIS manipulation and analysis functions are vital for decision-making and planning. These activities range from data retrieval tasks, such as selecting information based on specific criteria, to advanced analytical techniques that address complex spatial problems.One critical GIS analysis method is overlaying, which combines multiple data layers to examine impacts. For example, overlaying a river-dammed lake boundary with road networks can identify affected infrastructure. Another common...
Design Example: Alignment of a Road Line Using GIS01:17

Design Example: Alignment of a Road Line Using GIS

The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...

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相关实验视频

Updated: Jun 9, 2026

Use of Electromagnetic Navigational Transthoracic Needle Aspiration E-TTNA for Sampling of Lung Nodules
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基于针-组织相互作用模型的针路规划方法.

Yong Lei1, Shilun Du1, Murong Li2

  • 1State Key Lab of Fluid Power & Mechatronic Systems, Zhejiang University, HangZhou, ZheJiang, 315000, China.

Computer methods and programs in biomedicine
|October 25, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的针路规划方法,该方法可以考虑患者特异性的组织差异. 这种方法显著减少了针头插入程序的定位错误,提高了医疗干预的准确性.

关键词:
完整的计算模型.针路规划 针路规划 针路规划机器人辅助手术手术是什么意思

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科学领域:

  • 医疗机器人 医疗机器人
  • 生物医学工程 生物医学工程
  • 手术规划 手术规划

背景情况:

  • 针插入的准确性受到组织偏移和目标运动的挑战.
  • 现有的规划方法与患者特定的变化作斗争,导致目标错误增加.

研究的目的:

  • 提出一种针对患者的针路径规划方法,包括针组织相互作用模型.
  • 通过解决患者特异性差异和实时组织变形,提高准准确度.

主要方法:

  • 开发了一个使用局部约束的3D针-组织相互作用变形模型 (全计算模型).
  • 利用基于Kriging的预测,用于相互作用力,目标运动和针曲.
  • 使用快速探索随机树 (RRT) 进行初始路径规划,然后进行代学习控制以纠错错误.
  • 引入了用于患者特定校准的手术内参数识别算法.

主要成果:

  • 模拟证实了完整计算模型模拟针-组织相互作用的能力,并使变形意识路径规划成为可能.
  • 实验验证显示,预测和实际组织变形和针曲之间有很好的一致性.
  • 拟议的方法在幻影实验中将最大准误差从3.89毫米减少到1毫米以下.

结论:

  • 基于完整的计算模型的针路规划在实验中被验证为有效的.
  • 纳入预测的组织变形显著提高了规划准确性.
  • 该方法通过考虑患者特定的因素来实现所需的目标准确性.