Purpose

Surgical correction of metopic craniosynostosis typically involves open cranial vault remodeling. Accurate translation of the virtual surgical plan into the operating room is challenging due to the lack of tools for intraoperative analysis of the surgical outcome. This study aimed to evaluate the feasibility of using a hand-held 3D photography device for intraoperative evaluation and guidance during cranial vault surgical reconstruction.

Methods

A hand-held structured light scanner was used for intraoperative 3D photography during five craniosynostosis surgeries, obtaining 3D models of skin and bone surfaces before and after the remodeling. The accuracy of this device for 3D modeling and morphology quantification was evaluated using preoperative computed tomography imaging as gold-standard. In addition, the time required for intraoperative 3D photograph acquisition was measured.

Results

The average error of intraoperative 3D photography was 0.30 mm. Moreover, the interfrontal angle and the transverse forehead width were accurately measured in the 3D photographs with an average error of 0.72 degrees and 0.62 mm. Surgeon’s feedback indicates that this technology can be integrated into the surgical workflow without substantially increasing surgical time.

Conclusion

Hand-held 3D photography is an accurate technique for objective quantification of intraoperative cranial vault morphology and guidance during metopic craniosynostosis surgical reconstruction. This noninvasive technique does not substantially increase surgical time and does not require exposure to ionizing radiation, presenting a valuable alternative to computed tomography imaging. The proposed methodology can be integrated into the surgical workflow to assist during cranial vault remodeling and ensure optimal surgical outcomes.

中文翻译：

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三维摄影术用于在位颅脑前突手术中进行术中形态分析

目的

异位颅骨融合症的手术矫正通常涉及开放性颅穹隆重塑。由于缺乏用于术中分析手术结果的工具，因此将虚拟手术计划准确地转换到手术室中具有挑战性。这项研究旨在评估在颅穹手术重建过程中使用手持式3D摄影设备进行术中评估和指导的可行性。

方法

在五次颅突吻合手术中，使用了手持式结构光扫描仪进行术中3D摄影，从而获得了重建前后皮肤和骨骼表面的3D模型。使用术前计算机断层扫描成像作为金标准，评估了该设备用于3D建模和形态定量的准确性。此外，还测量了术中3D照片采集所需的时间。

结果

术中3D摄影的平均误差为0.30毫米。此外，在3D照片中准确测量了额角和额头横向宽度，平均误差为0.72度和0.62 mm。外科医生的反馈表明，该技术可以集成到手术流程中，而不会显着增加手术时间。

结论

手持式3D摄影是一种准确的技术，可用于客观量化术中颅内神经突增生手术重建过程中的颅内穹v形态和指导。这种无创技术不会显着增加手术时间，也不需要暴露于电离辐射下，是计算机断层扫描成像的一种有价值的替代方法。所提出的方法可以集成到手术流程中，以在颅穹改建过程中提供帮助，并确保最佳的手术效果。