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相关概念视频

Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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相关实验视频

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Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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实时芯片上飞行时间检测用于美国时间逆转植入物的定位.

Anirudh Kumar Parag, Bogdan C Raducanu, Stefano Stanzione

    IEEE transactions on biomedical circuits and systems
    |February 17, 2026
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    概括

    这项研究引入了一个小型化的ASIC用于医疗设备的超声波逆时定位. 新的设计大大降低了功率和内存,使可穿戴应用程序.

    科学领域:

    • 生物医学工程 生物医学工程
    • 信号处理 信号处理
    • 医疗器械 医疗器械

    背景情况:

    • 时间逆转 (TR) 超声波定位对于深层组织植入式医疗器械 (IMD) 是有效的.
    • 目前的系统需要显著的小型化,用于低功耗的可穿戴应用.

    研究的目的:

    • 为小型化基于TR的IMD本地化提供一个概念验证的应用特定集成电路 (ASIC) 架构.
    • 为了证明可穿戴IMD定位的功率和内存需求减少.

    主要方法:

    • 开发了一个具有集成接收/传输链的45通道ASIC.
    • 实施了一种新的峰值实例检测 (PID) 电路,用于实时飞行时间 (ToF) 检测和数字化.
    • 在散射介质中使用3D打印的人类肋骨幻影进行了体外实验.

    主要成果:

    • 与商业系统相比,PID电路每通道减少,接收功率为100μW (2000X减少),内存使用量为540位 (746X减少).
    • 在芯片上的ToF数字化简化了TR计算.
    • 与未聚焦的超声波传输相比,实现了22倍的功率效率提高,与商业本地化性能相匹配.

    结论:

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    • 拟议的ASIC架构可用于小型化,低功耗,可穿戴的基于TR的IMD本地化.
    • 新的PID电路可以大大节省电力和内存.
    • 这项技术推动了实用的IMD本地化系统的开发.