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增强现实导航系统用于胆汁干预程序,具有动态呼吸运动校正.

Shuo Yang, Yongtian Wang, Danni Ai

    IEEE transactions on bio-medical engineering
    |January 19, 2024
    PubMed
    概括

    这项研究引入了用于胆道手术的增强现实 (AR) 导航系统. 该AR系统提高了仪表尖端 (Tip) 的精度,减少了干预期间的风险和辐射暴露.

    科学领域:

    • 医疗成像医学成像
    • 手术导航 手术导航
    • 增强现实是一种增强现实.

    背景情况:

    • 胆管干预程序需要精确跟踪仪器尖端 (Tip) 使用X射线成像.
    • 目前的方法受到X射线成像限制和呼吸运动的限制,导致潜在的胆道损伤,更长的程序和增加的辐射暴露.

    研究的目的:

    • 开发和评估一个增强现实 (AR) 导航系统,以提高胆道干预程序的精度.
    • 为了应对仪器尖端 (Tip) 跟踪和X射线导向干预中呼吸干扰的挑战.

    主要方法:

    • 开发了一个新的AR导航系统,集成了系统校准,呼吸运动校正和虚拟-真实融合.
    • 系统校准对齐磁性和3D计算机断层扫描 (CT) 坐标.
    • 呼吸运动校正利用多重规范化来解决运动诱导的错位,使患者解剖学和仪器尖端 (Tip) 的动态虚拟-真实融合成为可能.

    主要成果:

    • 该系统实现了幻影的平均调整误差为0.75 ± 0.17毫米,患者的平均误差为2.79 ± 0.46毫米.
    • 在幻象上的导航实验表明,平均Tip定位误差为0.98 ± 0.15毫米,平均融合误差为1.67 ± 0.34毫米.

    结论:

    • 开发的AR导航系统为胆道干预程序提供了准确和直观的指导.

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  • 该系统自动记录仪表尖端 (Tip) 到CT数据,并动态地将3D虚拟模型叠加到患者上,减少对比剂和X射线使用的依赖.