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首页> 外文期刊>Journal of Cranio-Maxillofacial Surgery >Validation of anatomical landmarks-based registration for image-guided surgery: An in-vitro study
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Validation of anatomical landmarks-based registration for image-guided surgery: An in-vitro study

机译：基于解剖界标的图像引导手术配准的验证：一项体外研究

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Introduction: Perioperative navigation is a recent addition to orthognathic surgery. This study aimed to evaluate the accuracy of anatomical landmarks-based registration. Materials and methods: Eighty-five holes (1.2 mm diameter) were drilled in the surface of a plastic skull model, which was then scanned using a SkyView cone beam computed tomography scanner. DICOM files were imported into BrainLab ENT 3.0.0 to make a surgical plan. Six anatomical points were selected for registration: the infraorbital foramena, the anterior nasal spine, the crown tips of the upper canines, and the mesial contact point of the upper incisors. Each registration was performed five times by two separate observers (10 times total). Results: The mean target registration error (TRE) in the anterior maxillary/zygomatic region was 0.93 ± 0.31 mm (p < 0.001 compared with other anatomical regions). The only statistically significant inter-observer difference of mean TRE was at the zygomatic arch, but was not clinically relevant. Conclusion: With six anatomical landmarks used, the mean TRE was clinically acceptable in the maxillary/zygomatic region. This registration technique may be used to access occlusal changes during bimaxillary surgery, but should be used with caution in other anatomical regions of the skull because of the large TRE observed.
机译：简介：围手术期导航是正颌外科手术中的新成员。这项研究旨在评估基于解剖标志的配准的准确性。材料和方法：在塑料头骨模型的表面上钻了85个孔（直径1.2毫米），然后使用SkyView锥束计算机断层扫描仪对其进行扫描。将DICOM文件导入到BrainLab ENT 3.0.0中以制定手术计划。选择了六个解剖学点进行配准：眶下孔，鼻前棘，上犬齿的冠尖和上门齿的内侧接触点。每次注册由两名独立的观察员执行五次（总计十次）。结果：上颌前/ zy骨前区的平均目标配准误差（TRE）为0.93±0.31 mm（与其他解剖区域相比，p <0.001）。观察者之间的平均TRE的唯一统计学上显着差异是在arch弓，但在临床上不相关。结论：使用六个解剖学标志，在上颌/ go骨区域的平均TRE在临床上是可以接受的。这种配准技术可用于双颌手术中咬合变化，但由于观察到的TRE较大，在颅骨的其他解剖区域中应谨慎使用。

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