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首页> 美国卫生研究院文献>Springer Open Choice >Improved accuracy of mandible geometry reconstruction at the stage of data processing and modeling
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Improved accuracy of mandible geometry reconstruction at the stage of data processing and modeling

机译：在数据处理和建模阶段提高下颌骨几何重建的准确性

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The article presents a comparative study of influence of the Lanczos resampling filter on improving the accuracy of reconstruction of mandible geometries. The research was performed on eight different patients. Digital Imaging and Communications in Medicine data were obtained on the Siemens Somatom Sensation Open 40 scanner. At the stage of reconstruction, the same parameters were utilized, while only slice thickness was changed. Modeling with voxel dimensions of 0.4 mm × 0.4 mm × 1.5 mm was chosen as the gold standard over the modeling approach comprising voxel dimensions of 0.4 mm × 0.4 mm × 3.0 mm and improved using the Lanczos resampling filter. The influence of the Lanczos resampling filter on the accuracy of reconstruction of mandible geometry is very similar for the eight presented patients. The average results show a distribution with a positive skew and kurtosis. The value of skewness is 0.713 and kurtosis is 4.221 for the model without Lanczos filtering applied. When the Lanczos filtering is applied the value of skewness is 0.542 and kurtosis is 4.313. Based on 95% confidence, changes in layer thickness from 1.5 mm to 3 mm generated errors reconstructing the geometry of the mandible at the value of 0.153 mm ± 1.209 mm. In models improved using the Lanczos resampling filter, the errors generated in reconstructing the geometry of the mandible were minimized at the value of 0.160 mm ± 1.007 mm. The presented research highlights new opportunities to improve the accuracy of reconstruction geometry of the mandible at the stage of data processing.
机译：本文对Lanczos重采样滤波器对提高下颌骨几何形状重建准确性的影响进行了比较研究。该研究是针对八位不同的患者进行的。医学上的数字成像和通信数据是通过Siemens Somatom Sensation Open 40扫描仪获得的。在重建阶段，使用相同的参数，而仅改变切片厚度。体素尺寸为0.4mm×0.4mm×1.5mm的建模被选为黄金标准，优于包含0.4mm×0.4mm×3.0mm的体素的建模方法，并使用Lanczos重采样滤镜进行了改进。 Lanczos重采样滤波器对下颌骨几何形状重建准确性的影响与八位患者相似。平均结果显示偏斜和峰度为正的分布。对于未应用Lanczos滤波的模型，偏度值为0.713，峰度为4.221。当应用Lanczos滤波时，偏度值为0.542，峰度为4.313。根据95％的置信度，将层厚度从1.5mm更改为3mm会产生误差，从而重建下颌骨的几何形状，值为0.153mm±1.209mm。在使用Lanczos重采样滤波器改进的模型中，在重建下颌骨的几何形状时产生的误差最小化为0.160mm±±1.007mm。提出的研究突出了在数据处理阶段提高下颌骨重建几何形状准确性的新机会。

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