Winder R J, McKnight W, McRitchie I, Montgomery D, Wulf J
University of Ulster, United Kingdom.
Stud Health Technol Inform. 2006;119:574-6.
The creation of a satisfactory cosmetic outcome in the repair of cranial defects relies on manual skill. However, computer aided design is gaining acceptance in the creation of custom cranial implants. The purpose of this work is to demonstrate the accuracy of a CAD generated skull defect contours using 3D difference maps. 3D multi-slice CT scanning was carried out on a life size plastic skull. Surface models were generated of the original skull and of temporofrontal and parietal defects. Surface contours were interpolated towards the centre of the defect from the edges where it was blended. The CAD contour deviation ranged from 0.0 mm to 2.0 mm with 80% of the total defect area less than 0.66 mm as measured by difference maps. CAD techniques can be used to produce contours for the repair of cranial defects with minimum deviation from the original skull contour. This enables accurate design and production of cranial implants.
在颅骨缺损修复中获得满意的美容效果依赖于手工技能。然而，计算机辅助设计在定制颅骨植入物的创建中越来越被接受。这项工作的目的是使用三维差异图来证明计算机辅助设计生成的颅骨缺损轮廓的准确性。对一个真人大小的塑料颅骨进行了三维多层CT扫描。生成了原始颅骨以及颞额部和顶叶缺损的表面模型。从融合边缘向缺损中心插值表面轮廓。通过差异图测量，计算机辅助设计轮廓偏差范围为0.0毫米至2.0毫米，总缺损面积的80%小于0.66毫米。计算机辅助设计技术可用于生成颅骨缺损修复的轮廓，与原始颅骨轮廓的偏差最小。这使得能够精确设计和生产颅骨植入物。
