模拟颌面外科手术后果的生物力学模型
Biomechanical models to simulate consequences of maxillofacial surgery
摘要：
本文介绍了计算机辅助颌面外科的生物力学有限元模型。在简要概述了连续弹性建模方法后，介绍了两种模型，并讨论了它们在计算机辅助应用中的用途。第一个模型涉及正颌外科手术，旨在预测上颌骨和下颌骨截骨术的面部后果。为此，面部的通用三维模型通过弹性配准自动适应患者的形态。因此，可以提供下颌骨截骨术后果的定性模拟。第二种模式解决睡眠呼吸暂停综合征。其目的是建立呼吸过程中气流和上气道壁之间相互作用的完整模型。在呼吸周期的相互作用的动力学模拟计算和观察到的现象进行比较。
英文摘要：
This paper presents the biomechanical finite element models that have been developed in the framework of the computer-assisted maxillofacial surgery. After a brief overview of the continuous elastic modelling method, two models are introduced and their use for computer-assisted applications discussed. The first model deals with orthognathic surgery and aims at predicting the facial consequences of maxillary and mandibular osteotomies. For this, a generic three-dimensional model of the face is automatically adapted to the morphology of the patient by the mean of elastic registration. Qualitative simulations of the consequences of an osteotomy of the mandible can thus be provided. The second model addresses the Sleep Apnoea Syndrome. Its aim is to develop a complete modelling of the interaction between airflow and upper airways walls during respiration. Dynamical simulations of the interaction during a respiratory cycle are computed and compared with observed phenomena.
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