Tetrahedral Mass Spring Model for Fast Soft Tissue Deformation
Tetrahedral Mass Spring Model for Fast Soft Tissue Deformation
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DOI：
10.1007/3-540-45015-7_14
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发表时间：
2003-06
期刊：
影响因子：
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通讯作者：
W. Mollemans;F. Schutyser;J. V. Cleynenbreugel;P. Suetens
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文献类型：
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作者：
W. Mollemans;F. Schutyser;J. V. Cleynenbreugel;P. Suetens
颌面外科治疗头部骨骼异常。颅骨重塑意味着截骨术，骨碎片重新定位，骨缺损修复，植入植入物。. . .近年来，基于3D图像的手术计划系统的使用在该领域中越来越被接受。虽然骨相关的规划概念和方法正在成熟，但软组织变形的预测需要进一步的基础研究。在本文中，我们提出了一个四面体的软组织模型，可用于手术规划系统，以预测由于骨骼变化的软组织变化。我们的模型由通过弹簧连接的质量点组成。我们提出了一种方法来直接计算由于外部变化的模型的变形。为了实现快速计算，我们利用大多数变形是局部的这一事实，并将我们的结果与预先计算的参考模型进行比较，以证明我们模型的准确性。
Maxillofacial surgery treats abnormalities of the skeleton of the head. Skull remodelling implies osteotomies, bone fragment repositioning, restoration of bone defects, inserting implants, . . . . Recently, the use of 3D image-based surgery planning systems is more and more accepted in this field. Although the bone-related planning concepts and methods are maturing, prediction of soft tissue deformation needs further fundamental research. In this paper we present a tetrahedral soft tissue model that can be used in a surgery planning system to predict soft tissue changes due to skeletal changes. Our model consists of mass points connected by springs. We propose a way to directly calculate the deformation of the model due to external changes. To achieve fast calculations we take advantage of the fact that most deformations are local and we compare our results with pre-computed reference models, to prove the accuracy of our model.