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Systemic and Local Drug Delivery for Treating Diseases of the Central Nervous System in Rodent Models
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扩散域方法用于柔性注射针插入和放松.

Katharina I Jerg1, Lalith Boggaram Naveen1, Guido Kanschat2

  • 1Mannheim Institute for Intelligent Systems in Medicine (MIISM), Heidelberg University, Mannheim, Germany.

International journal for numerical methods in biomedical engineering
|October 6, 2023
PubMed
概括

这项研究增强了灵活针的针插入模拟,使用扩散域方法,消除了复杂的网格. 一个新的放松模型提高了对现实的医疗干预的准确性.

关键词:
欧勒 - 伯努利束理论可变形的针头插入.扩散域方法是一种分散域方法.扩散的惩罚方法.线性弹性方程 线性弹性方程针-组织相互作用.组织放松,组织放松.

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科学领域:

  • 计算力学是计算力学.
  • 医疗模拟 医疗模拟
  • 机器人技术 机器人技术 机器人技术

背景情况:

  • 针插入模拟对于外科训练和计划至关重要.
  • 目前的方法通常需要复杂的,符合边界的网格.
  • 现有的扩散域方法仅限于硬针.

研究的目的:

  • 扩展扩散域方法来模拟带有角尖的柔性针.
  • 为了引入一种新的放松模型,用于针-组织相互作用.
  • 为了验证模拟对幻影实验的验证.

主要方法:

  • 使用欧勒-伯努利光束建模的柔性针.
  • 扩散域方法以避免网格复杂性.
  • 尽量减少潜在能量以实现系统放松.
  • 结合拉普拉斯方程和边界条件的扩散惩罚方法.

主要成果:

  • 与幻影实验相比,模拟的针偏差平均为0.29毫米.
  • 在97.5%的标记物中,组织变形误差低于1毫米.
  • 在额外的实验中证明了放松过程的可行性.

结论:

  • 扩散域方法有效地模拟了灵活的针头插入,而不需要网格.
  • 新的放松模型提高了针织组织定位的准确性.
  • 这种方法在实际的医疗干预中对患者特定的模拟非常有价值.