Pimentel Poliana Andrade, Bomfim Rodrigo Tavares, Andrade Lucio Costa Safira, Ferraz Eduardo Gomes, Ribeiro Lamberti Patricia Leite, Rubira-Bullen Izabel Regina Fischer, Sarmento Viviane Almeida
a Propedeutics and Integrated Clinic Department, School of Dentistry, Federal University of Bahia , Salvador , Bahia , Brazil .
b Department of Stomatology , School of Dentistry at Bauru, University of São Paulo , Bauru , Brazil , and.
J Med Eng Technol. 2015;39(8):480-4. doi: 10.3109/03091902.2015.1067727. Epub 2015 Jul 22.
The aim of this study was to evaluate the accuracy of three-dimensional (3D) reconstructions generated by different software, computed tomography (CT) scanners and slice thicknesses. Ten human dry mandibles were scanned by CT and cone beam CT (CBCT). Digital files were processed in different software systems and 3D reconstructions were performed. Linear measures were made and compared. The results showed significant differences in linear distances between the human dry mandibles and their 3D reconstructions. The relative error from CBCT images ranged from 3.10 to 4.82% and from 3.40 to 5.92% in CT images. It is important to consider that the performance of the software is not just related to the algorithm used, but mostly with its handling, that can facilitate or not the measurement by the operator. In conclusion, the discrepancies were not greater than 0.58 mm, so they should not affect the image quality.
本研究的目的是评估由不同软件、计算机断层扫描（CT）扫描仪和切片厚度生成的三维（3D）重建的准确性。使用CT和平板锥束CT（CBCT）对10个干燥的人类下颌骨进行扫描。在不同的软件系统中处理数字文件并进行3D重建。进行线性测量并比较。结果显示，干燥的人类下颌骨与其3D重建之间的线性距离存在显著差异。CBCT图像的相对误差范围为3.10%至4.82%，CT图像的相对误差范围为3.40%至5.92%。需要考虑的是，软件的性能不仅与所使用的算法有关，而且主要与其操作方式有关，这可能会方便或不利于操作员进行测量。总之，差异不大于0.58毫米，因此不应影响图像质量。
