Ferraz Eduardo Gomes, Andrade Lucio Costa Safira, dos Santos Aline Rode, Torregrossa Vinicius Rabelo, Rubira-Bullen Izabel Regina Fischer, Sarmento Viviane Almeida
School of Dentistry, Federal University of Bahia, Avenida Araújo Pinho, n. 62 Canela, 41110-150, Salvador, Bahia, Brazil,
Clin Oral Investig. 2013 Dec;17(9):2113-8. doi: 10.1007/s00784-013-0921-7. Epub 2013 Jan 24.
The aim of this study was to evaluate the accuracy of virtual three-dimensional (3D) reconstructions of human dry mandibles, produced from two segmentation protocols ("outline only" and "all-boundary lines").
Twenty virtual three-dimensional (3D) images were built from computed tomography exam (CT) of 10 dry mandibles, in which linear measurements between anatomical landmarks were obtained and compared to an error probability of 5 %.
The results showed no statistically significant difference among the dry mandibles and the virtual 3D reconstructions produced from segmentation protocols tested (p = 0,24).
During the designing of a virtual 3D reconstruction, both "outline only" and "all-boundary lines" segmentation protocols can be used.
Virtual processing of CT images is the most complex stage during the manufacture of the biomodel. Establishing a better protocol during this phase allows the construction of a biomodel with characteristics that are closer to the original anatomical structures. This is essential to ensure a correct preoperative planning and a suitable treatment.
本研究旨在评估通过两种分割方案（“仅轮廓”和“所有边界线”）生成的人类干燥下颌骨虚拟三维（3D）重建的准确性。
从10个干燥下颌骨的计算机断层扫描（CT）构建了20个虚拟三维（3D）图像，获取了解剖标志点之间的线性测量值，并将其与5%的误差概率进行比较。
结果显示，在测试的分割方案所生成的干燥下颌骨与虚拟3D重建之间，没有统计学上的显著差异（p = 0.24）。
在设计虚拟3D重建时，可以使用“仅轮廓”和“所有边界线 ”这两种分割方案。
CT图像的虚拟处理是生物模型制造过程中最复杂的阶段。在此阶段建立更好的方案可构建出具有更接近原始解剖结构特征的生物模型。这对于确保正确的术前规划和合适的治疗至关重要。
