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首页> 外文期刊>The Canadian Journal of Neurological Sciences: le Journal Canadien des Sciences Neurologiques >P.120 Rapid intraoperative reconstruction of cranial implants for craniotomy procedures: a feasibility study
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P.120 Rapid intraoperative reconstruction of cranial implants for craniotomy procedures: a feasibility study

机译：P.120快速术中重建颅骨植入物的颅骨植入物：可行性研究

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Background: The aim of this study was to investigate intraoperative methods to generate patient-specific PMMA bone implants during a craniotomy. The proposed methods combine a cost-efficient, and non-invasive structured light scanner (SLS) as an imaging modality and a prototype printer for rapid generation of implant molds. Methods: This simulation study was performed using retrospective data from three craniotomy patients. The extracted bone flap and the cranial defect were scanned using a SLS, which generates a 3D surface model of an object by projecting a series of light-patterns on it. Prototype printed implant models were generated using two different techniques. The molds were then used to shape PMMA bone implants. These implants were evaluated regarding their accuracy to reconstruct the natural skull anatomy and compared to freehand formed implants. Results: The patient-specific bone implants reconstructed the preoperative anatomy with an average RMS error of 1.37mm (StDev 0.27), compared to an error of 1.5mm (StDev 0.43) for the freehand shaped implants. On average the intraoperative scanning time was 4.7min. The average time to generate and print the implant molds was 204 min. Conclusions: Results of this study have shown great promise for the proposed method to be used for patient-specific bone flap reconstruction during craniotomies.
机译：背景：本研究的目的是调查术中的方法，在颅骨术期间产生患者特异性的PMMA骨植入物。所提出的方法将具有成本效益和非侵入性结构化光扫描仪（SLS）的成像模型和原型打印机组合为用于快速产生植入模具的原型打印机。方法：使用来自三个Craniotomy患者的回顾性数据进行该模拟研究。使用SLS扫描提取的骨瓣和颅缺陷，通过投影一系列明亮的图案来产生物体的3D表面模型。使用两种不同的技术产生原型印刷植入模型。然后使用模具来形成PMMA骨植入物。评估这些植入物关于它们的准确性，以重建天然颅骨解剖学并与手法形成植入物相比。结果：患者特异性骨植入物重建了术前解剖学，其平均均方根误差为1.37mm（stdev 0.27），而写入形状植入物的1.5mm（stdev 0.43）的误差相比。平均地，术中扫描时间为4.7min。产生和打印植入模具的平均时间为204分钟。结论：本研究的结果表明，在Craniotomies期间，该研究的使用方法旨在用于患者特异性骨瓣重建的方法。

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