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A physically based model to simulate maxillo-facial surgery from 3D CT images

机译:基于物理的模型可从3D CT图像模拟上颌面手术

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Computer-based surgery simulation represents a rapidly emerging and increasingly important area of research that combines a number of disciplines for the common purpose of improving health care. Generally, the goal of computer-based surgery simulation is to enable a surgeon to experiment with different surgical procedures in an artificial environment. This paper describes an approach for elastic modelling of human tissue based on the use of embedded boundary condition techniques. Embedded boundary condition models allow to simulate the cranio-facial surgery directly on the grid of the 3D CT image of the patient. Previously simulated operations have been performed using surface models or by using a low detailed model of the tissue volume. The approach proposed here involves complete 3D modelling of the solid highly detailed structure of the object, starting from the information present in the 3D diagnostic images. Due to the huge amount of data and the computational complexity of the problem, a parallel version of the software has been implemented on the supercomputer CRAY T3E. The application of this approach for modelling the elastic deformation of human tissue in response to movement of bones is demonstrated both on the visible human data set of the National Library of Medicine and on the CT data set of real patients.
机译:基于计算机的手术模拟代表了一个迅速兴起且日益重要的研究领域,该领域结合了许多学科以达到改善医疗保健的共同目的。通常,基于计算机的手术模拟的目标是使外科医生能够在人造环境中进行不同的手术程序的实验。本文介绍了一种基于嵌入式边界条件技术的人体组织弹性建模方法。嵌入式边界条件模型允许直接在患者的3D CT图像的网格上模拟颅面手术。先前使用表面模型或通过使用组织体积较低的详细模型进行了模拟操作。这里提出的方法涉及从3D诊断图像中存在的信息开始,对对象的实体高度详细的结构进行完整的3D建模。由于海量数据和问题的计算复杂性,该软件的并行版本已在超级计算机CRAY T3E上实现。在美国国家医学图书馆的可见人类数据集和真实患者的CT数据集上均展示了这种方法对人体组织响应骨骼运动的弹性变形进行建模的应用。

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