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相关概念视频

Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

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Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
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在图像引导导航支气管支气管镜中使用芯片内磁传感的3D位置跟踪.

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    科学领域:

    • 生物医学工程 生物医学工程
    • 微系统和纳米技术
    • 医疗成像医学成像

    背景情况:

    • 图像引导手术通常依赖于像X射线这样的电离辐射,对患者和工作人员构成风险.
    • 现有的追踪系统可能是重的,昂贵的,或者缺乏精确的精确度,用于微妙的外科手术程序.
    • 在微创手术中需要紧,具有成本效益和准确的导航工具.

    研究的目的:

    • 开发和描述一种新的芯片内传感器和读出电路,用于高分辨率仪表跟踪.
    • 为了评估传感器在5度自由度 (DoF) 和6度自由度跟踪应用中的性能.
    • 为了证明基于磁场的跟踪作为外科导航中X射线成像的替代方案的潜力.

    主要方法:

    • 设计和制造了一种采用65纳米CMOS技术的小型化芯片内磁传感器,集成了模拟前端和模拟到数字转换器 (ADC) 等必不可少的组件.
    • 实现了5-DoF跟踪系统和使用外部线伤感应器的6-DoF系统.
    • 通过基板测量和在临床前体内猪肺模型中验证的准确性来描述系统性能.

    主要成果:

    • 微芯片占据的最小面积为1.06mm2,为类似设计报告的最小面积.
    • 实现了高分辨率跟踪:5-DoF精度为1.1毫米,6-DoF位置精度为0.8毫米,角度精度为1.1°,在15厘米3体积内,频率为20赫兹.
    • 在临床前的体外环境中,已证明成功地进行实时跟踪,最坏情况下的记录精度为5.8毫米.

    结论:

    • 开发的芯片内磁传感器为图像引导手术中的仪器跟踪提供了紧,低成本和高精度的解决方案.
    • 该系统为基于X射线的导航提供了可行的非电离替代方案,提高了手术过程中的安全性.
    • 证明的体外性能验证了传感器在最小侵入性干预中临床翻译的潜力.