Comparison of 3‐D mandibular surfaces generated by MRI and CT
Comparison of 3‐D mandibular surfaces generated by MRI and CT
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MRI 和 CT 生成的 3D 下颌表面的比较
DOI：
10.1111/ocr.12540
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Yamashiro Takashi
中科院分区：
文献类型：
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作者：
Maeda Jun;Tanikawa Chihiro;Nagata Namiki;Lim Jaeyeon;Kreiborg Sven;Murakami Shumei;Yamashiro Takashi
本研究的目的是评估当计算机断层扫描（CT）作为金标准时，使用磁共振成像（MRI）生成的三维下颌骨表面的误差。设置和样本人群7例正颌畸形患者接受了CT和MRI扫描。材料和方法下颌骨表面由表面绘制方法在每个CT和MR图像上生成。通过系统误差的一致性置信限（LOA）、随机误差的95%置信区间最小可检测变化（MDC 95）和组内相关系数（ICC）对CT和MRI之间的个体内可靠性进行统计学检验。在冠状突区的所有方向上观察到最大的MDC 95。其他区域显示的MDC 95值< 1.8 mm（横向）、3.5 mm（垂直方向）和1.7 mm（前后方向）。ICC显示“几乎完美”的协议，就所有regions.ConclusionRandom错误进行量化的3-D渲染的下颌骨MRI数据。虽然冠状突区域显示出最大的误差，但能够评价使用MRI生成的下颌骨表面的其他区域。
ObjectiveThe purpose of this study was to evaluate the errors of three‐dimensional mandibular surfaces generated using magnetic resonance imaging (MRI) when computed tomography (CT) was set as the gold standard.Settings and sample populationSeven patients with orthognathic deformities who had undergone CT and MRI scans were included in the study.Materials and MethodsMandibular surfaces were generated on each CT and MR image by the surface‐rendering method. Intra‐individual reliability between CT and MRI was statistically tested by the confidence limits of agreement (LOA) for systematic error, 95% confidence interval minimal detectable change (MDC95) for random error and intra‐class correlation coefficient (ICC).ResultsThe average total error was 1.6 mm. The greatest MDC95was observed in the coronoid region in all directions. The other regions showed MDC95values of < 1.8 mm (transvers direction), 3.5 mm (vertical direction) and 1.7 mm (antero‐posterior direction). ICCs showed ‘almost perfect’ agreement with respect to all regions.ConclusionRandom errors were quantified for 3‐D rendering of the mandible from MRI data. Although the coronoid region showed the greatest errors, the other regions of the mandibular surfaces generated using MRI were able to be evaluated.