Klein H M, Schneider W, Nawrath J, Gernot T, Voy E D, Krasny R
Klinik für Radiologische Diagnostik, RWTH Aachen.
Rofo. 1992 May;156(5):429-32. doi: 10.1055/s-2008-1032915.
Techniques for 3D reconstruction of medical objects and production of models by CAM have been markedly improved. Milling tools have limited abilities to reproduce complex anatomical structures. Even if 5-axis milling systems are used, the problem of collisions between tool and object is not yet under control. An alternative is offered here by stereolithography. We performed a computed tomography (Somatom DRH, Siemens/Erlangen) of a child with extensive maxillary bone defect after surgical treatment of a congenital tumour. The bone defect was covered by an alloplastic implant. 3D reconstructions were performed by the aid of a conventional personal computer. Generated 3D volume data sets were transferred to a stereolithography system (3D Systems GmbH, Darmstadt/FRG). The produced model revealed high accuracy of the anatomical structures. Intraoperatively, the alloplastic prosthesis was removed and the shape of the new implant could be designed using the stereolithographic model.
通过计算机辅助制造（CAM）对医学对象进行三维重建及制作模型的技术已得到显著改进。铣削工具在重现复杂解剖结构方面能力有限。即便使用五轴铣削系统，刀具与对象之间的碰撞问题仍未得到控制。立体光刻在此提供了一种替代方法。我们对一名先天性肿瘤手术治疗后上颌骨有大面积缺损的儿童进行了计算机断层扫描（Somatom DRH，西门子/埃尔朗根）。骨缺损由异体植入物覆盖。借助一台传统个人计算机进行了三维重建。生成的三维体积数据集被传输到一个立体光刻系统（3D Systems GmbH，达姆施塔特/联邦德国）。制作出的模型显示解剖结构具有高精度。术中，移除了异体假体，并可使用立体光刻模型设计新植入物的形状。
