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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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Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

Ultrasound II: Endoscopic Ultrasound and FibroScan

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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
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相关实验视频

Updated: May 24, 2025

Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU
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Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU

Published on: November 3, 2015

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研究胸部减弱断层扫描使用低频超声波差分成像的研究.

Tong Zhang, Haokang Shi, Rui Guo

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |March 5, 2025
    PubMed
    概括

    低频超声波可以通过测量呼吸过程中的信号能量变化来对胸部进行成像. 这种新方法揭示了胸部衰减变异,克服了肺部成像方面的挑战.

    科学领域:

    • 医疗成像医学成像
    • 声学 声学 在声学方面
    • 生物物理学的生物物理.

    背景情况:

    • 超声波是重要的医学成像工具,但由于肺部相关的信号干扰,胸部成像很困难.
    • 低频超声波 (10 kHz750 kHz) 显示了穿透胸部的潜力.
    • 超声波信号的振幅随着呼吸而变化,而旅行时间是稳定的.

    研究的目的:

    • 为了建立超声波能量衰减和胸部衰减因子之间的关系.
    • 开发一种差异成像方法,用于重建通风期间胸部衰减变化的情况.
    • 为了验证低频超声波用于胸部成像的可行性.

    主要方法:

    • 导出了第一个到达信号能量衰减和胸部衰减因子之间的关系.
    • 应用差分成像原理来重建衰减变化.
    • 使用数值模拟和人类受试者实验验证算法.

    主要成果:

    • 根据通风过程中的信号能量变化,证明了胸部衰减因子变化的重建.
    • 成功地确定了左侧和右侧胸部区域的明显高衰减区域.
    • 证实了拟议的低频超声波成像技术的可行性.

    更多相关视频

    Point-of-Care Lung Ultrasound in Adults: Image Acquisition
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    Point-of-Care Lung Ultrasound in Adults: Image Acquisition

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    Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU
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    Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU

    Published on: November 3, 2015

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    Point-of-Care Lung Ultrasound in Adults: Image Acquisition
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    Point-of-Care Lung Ultrasound in Adults: Image Acquisition

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    Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis
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    结论:

    • 低频超声波使胸部衰减的差异成像成为可能.
    • 呼吸诱导的超声波信号变化可以用于成像.
    • 这种技术为挑战性胸部成像应用提供了潜在的解决方案.