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An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging
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透明的双频CMUT阵列用于光声成像.

Mahyar Ghavami, Mohammad Rahim Sobhani, Roger Zemp

    IEEE transactions on ultrasonics, ferroelectrics, and frequency control
    |November 8, 2023
    PubMed
    概括

    这项研究引入了一种透明的双频电容微机超声传感器 (CMUT) 阵列,用于改进光声成像. 新的透明CMUT设计增强了目标照明和成像深度,克服了传统不透明传感器的局限性.

    科学领域:

    • 生物医学工程 生物医学工程
    • 光学成像技术的成像
    • 材料科学 材料科学 材料科学

    背景情况:

    • 传统的光声成像系统使用不透明的超声传感器,需要低效的斜光传输.
    • 这导致了低于最佳的目标照明和重的系统设计,限制了成像性能.

    研究的目的:

    • 开发一个透明的电容微机超声传感器 (CMUT) 线性阵列,用于透光光声成像.
    • 为了实现双带操作,提高空间分辨率和图像深度.

    主要方法:

    • 使用粘合剂晶圆粘接制造透明的CMUT阵列.
    • 使用光学透明的导体 (氧化),透明的聚合物 (双环) 和化膜.
    • 在交错架构中设计了一种双频阵列 (4.2 和 9.3 MHz).

    主要成果:

    • 在可见范围内达到76.8%的最大光学透明度.
    • 透明的双频CMUT阵列在线目标的透光光声学成像中显示出更好的空间分辨率和成像深度.
    • 通过交错架构,在接收点扩展函数 (PSF) 中将格子叶片最小化.

    结论:

    • 透明的双频CMUT阵列是透光光声成像的一个有前途的进步.

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  • 这项技术克服了不透明传感器的局限性,使光学成像更高效和有效.
  • 双频设计有助于卓越的空间分辨率和图像深度.