OBJECTIVE To study on the clinical efficacy of precise localization of O-arm and navigation system in spinal cord lesions. METHODS From Augst 2015 to September 2019, 22 patients with spinal cord lesions were arranged in the group.The intraoperative cross-sectional images were acquired by O-arm image system, which were transferred to the Stealth navigation system, and fused with pre-opreative MRI images. The image fusion was completed by the Medtronic Synergy Cranial software. The fused images were used to locate spinal cord lesions, assisted by the navigation system. The navigation errors were evaluated by measuring the maximum distance between the end of the lesion in MRI and its real position. RESULTS The image fusion were completed in all patients, and we successfully completed the image-guided surgeries of the spinal cord lesions. The time of image processing was between 7 min and 19 min, and the mean value was 15.1 ± 2.2 min. The navigation error was between 0.9 mm and 5.3 mm, the mean value was 1.6 ± 0.9 mm. CONCLUSION The application of precise localization of O-arm and navigation system in spinal cord lesions is clinically reliable and feasible.

中文翻译：

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O型臂和导航系统在脊髓病变精确定位中的应用：案例系列研究

目的研究O型臂精确定位及导航系统在脊髓病变中的临床疗效。方法 2015年8月至2019年9月，本组共安排22例脊髓病变患者，采用O型臂影像系统采集术中横断面图像，传输至Stealth导航系统，与术前影像融合。 MRI 图像。图像融合由美敦力 Synergy Cranial 软件完成。在导航系统的辅助下，融合图像用于定位脊髓病变。通过测量 MRI 中病变末端与其实际位置之间的最大距离来评估导航误差。结果所有患者均完成影像融合，成功完成脊髓病变影像引导手术。图像处理时间在 7 分钟到 19 分钟之间，平均值为 15.1±2.2 分钟。导航误差在0.9-5.3mm之间，平均值为1.6±0.9mm。结论 O型臂精确定位及导航系统在脊髓病变中的应用具有临床可靠性和可行性。