论文标题
在节奏切除术中的额头皱纹周围伸展皮肤的模拟
Simulation of Skin Stretching around the Forehead Wrinkles in Rhytidectomy
论文作者
论文摘要
目的：在额头皱纹周围伸展的皮肤是节奏切除术的重要方法。需要适当的参数来评估手术效果。在本文中，提出了一种模拟方法来获得参数。方法：使用分辨率为50μm的三维点云数据。首先，通过b-spline插值和外推以限制皱纹区域的变形，生成了皱纹额头下的平滑支撑轮廓。然后，基于向量形成的固有有限元（Vfife）算法，在MATLAB中实现了模拟，以在拉伸过程中变形皱纹的前额皮肤。最后，采用了应力分布和额头皮肤的残余皱纹来评估手术效果。结果：尽管当额头皱纹有限拉伸时，残余皱纹是相似的，但其应力分布会发生很大变化。这表明皮肤中的应力分布有效地评估了手术作用，并且额头皱纹很容易被过度拉伸，这可能会导致潜在的皮肤损伤。结论：仿真方法可以预测额头皱纹伸展手术后的应力分布和残余皱纹，这可以潜在地用于控制手术过程并进一步降低皮肤损伤的风险。
Objective: Skin stretching around the forehead wrinkles is an important method in rhytidectomy. Proper parameters are required to evaluate the surgical effect. In this paper, a simulation method was proposed to obtain the parameters. Methods: Three-dimensional point cloud data with a resolution of 50 μm were employed. First, a smooth supporting contour under the wrinkled forehead was generated via b-spline interpolation and extrapolation to constrain the deformation of the wrinkled zone. Then, based on the vector formed intrinsic finite element (VFIFE) algorithm, the simulation was implemented in Matlab for the deformation of wrinkled forehead skin in the stretching process. Finally, the stress distribution and the residual wrinkles of forehead skin were employed to evaluate the surgical effect. Results: Although the residual wrinkles are similar when forehead wrinkles are finitely stretched, their stress distribution changes greatly. This indicates that the stress distribution in the skin is effective to evaluate the surgical effect, and the forehead wrinkles are easily to be overstretched, which may lead to potential skin injuries. Conclusion: The simulation method can predict stress distribution and residual wrinkles after forehead wrinkle stretching surgery, which can be potentially used to control the surgical process and further reduce risks of skin injury.
