基于深度学习的软组织变形和压力的实时集成建模
Ziyang Hu1, Shenghui Liao1, Xiaoyan Kui1
1School of Computer Science and Engineering, Central South University, Changsha, People's Republic of China.
Physics in medicine and biology
|May 28, 2025
概括
这项研究引入了一个神经网络框架,用于实时软组织模拟,准确地建模变形和应力场,用于增强的外科训练模拟器. 该方法显著提高了计算效率,同时保持了高精度.
科学领域:
- 计算力学是计算力学.
- 生物医学工程 生物医学工程
- 医学中的人工智能.
背景情况:
- 软组织变形和应力的实时模拟对于现实的外科训练至关重要.
- 当前的神经网络模型经常忽视应力场建模,并与多物理数据不平衡作斗争.
- 现有的方法缺乏先进的外科模拟器所需的全面物理场景染.
研究的目的:
- 开发基于神经网络的框架,用于软组织的实时多物理建模,并结合应力场预测.
- 用Z-Score规范化解决多物理模型中的数据分布挑战.
- 通过实现软组织物理性质的实时染来提高外科模拟器的准确性和效率.
主要方法:
- 神经网络方法紧地编码了边界条件和物理场 (变形和应力) 之间的非线性关系.
- Z-Score规范化用于平衡不同物理领域的特征尺度,防止偏差.
- 该框架在3D模型上得到验证,包括生物组织 (肝脏,脏,脏) 和悬臂梁.
主要成果:
- 该方法实现了显著的计算加速,比传统方法提高了1000倍至1万倍的效率.
- 与传统方法相比,准确性仅保持在1%左右的最小损失中.
- 证明了在软组织中有效预测移位和应力分布.
结论:
- 拟议的框架成功地整合了软组织的实时变形和应力场预测.
- 这一进步具有显著的潜力,可以提高外科模拟器的可靠性和功能.
- 该模型为生物医学应用中的多物理模拟挑战提供了强大的解决方案.
相关概念视频
Deformation of Member under Multiple Loadings
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When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
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Temperature Dependent Deformation
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In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
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