This paper presents a new system for computer-aided orthognathic surgery which aims at correcting dento-facial defects and keeping patient away from much radiation and high cost of CT or MRI imaging. The system allows simulating the surgical correction on virtual 3-D model of the skull reconstructed with the acquisition of radiographs of three orthogonal views and facial mesh data generated by 3-D laser scanner and the use of build-in skull template mesh. Surgery simulation includes maxilla Le Fort I and mandible bilateral SSRO osteotomies by interactive cutting of jaw bone. With the help of a special registration procedure, we are able to align the reconstructed skull model and a facial skin model. Upon fulfilment of the registration and virtual osteotomies, the system provides further assistance with predicting postoperative appearance of patient. Finally, we apply the system on one patient in clinical practice and achieve satisfied result.
展开▼
机译:本文提出了一种新的计算机辅助正颌外科手术系统,其目的是纠正牙颌面缺陷,并使患者远离大量放射线和CT或MRI成像的高成本。该系统允许在虚拟的3D头骨模型上模拟手术矫正,该模型通过获取三个正交视图的X射线照片和3-D激光扫描仪生成的面部网格数据以及使用内置的头骨模板网格来重建。手术模拟包括通过颌骨的交互式切割进行上颌Le Fort I手术和下颌骨双侧SSRO截骨术。借助特殊的注册程序,我们能够对齐重建的头骨模型和面部皮肤模型。一旦完成配准和虚拟截骨术,该系统将为预测患者的术后外观提供进一步的帮助。最后,我们将该系统应用于一名患者的临床实践,并获得满意的结果。
展开▼