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同时重建和跟踪用于图像导向手术中的运动校正.

Zhao Zheng, Jingfan Fan, Long Shao

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    概括

    这项研究引入了一种新的非接触式,未校准的光学跟踪系统,用于图像引导手术 (IGS). 新的框架通过同时跟踪工具和表面,提高了手术导航中的注册准确性和效率.

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    科学领域:

    • 医疗成像医学成像
    • 手术导航 手术导航
    • 计算机辅助手术 计算机辅助手术

    背景情况:

    • 图像引导手术 (IGS) 依赖于光学跟踪系统 (OTS) 来定位工具.
    • 使用探头或3D摄像头的传统IGS方法引入了压力变形或校准不准确等错误.
    • 准确的患者登记和手术内运动校正对于有效的IGS至关重要.

    研究的目的:

    • 在IGS中开发标记工具和无标记表面的同时重建和跟踪框架.
    • 消除了测量设备和OTS之间校准的需要.
    • 通过非接触式跟踪来提高图像引导手术的准确性和效率.

    主要方法:

    • 与OTS项目集成的同步近红外 (NIR) 数字光投影仪 (DLP).
    • 手术工具和表面在OTS坐标系统中同时跟踪.
    • 重建的表面被记录在CT图像空间中,用于手术内运动校正.

    主要成果:

    • 拟议的方法在幻影实验中实现了0.805±0.152毫米的目标注册误差 (TRE).
    • 在尸体样本实验中,TRE为1.328±0.318毫米.
    • 该方法在幻影研究中显示出与传统校准测量技术相比的优异性能.

    结论:

    • 开发的方法提高了IGS的注册准确性和效率.
    • 非接触和未校准的跟踪显著改善了外科导航.
    • 这个框架为更精确,更有效的图像引导干预提供了一个有希望的解决方案.