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相关概念视频

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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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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Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
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使用多焦点声波辐射力量的反射光学连贯弹性学.

Taye Mekonnen, Alexander W Schill, Christian Zevallos-Delgado

    Optics letters
    |June 1, 2023
    PubMed
    概括

    我们使用超声波和3D打印镜头开发了一种多焦点声波辐射力源,用于增强的反射光学连贯弹性学 (Rev-OCE). 该系统可以在幻影中实现高分辨率的机械性能探测.

    科学领域:

    • 生物医学光学 生物医学光学
    • 声学物理 声学物理
    • 医疗成像医学成像

    背景情况:

    • 反光光学连贯弹性学 (Rev-OCE) 提供高分辨率的机械性能评估.
    • 目前在Rev-OCE中产生剪切波的方法在空间控制和效率方面可能受到限制.

    研究的目的:

    • 为Rev-OCE.引入一种新的多焦声波辐射力源.
    • 提高声能的空间分布,以改善剪切波的产生.
    • 为了展示高分辨率的机械探测能力.

    主要方法:

    • 设计了一种多焦声波辐射力源,将超声波传感器与3D打印的声波镜头阵列集成在一起.
    • 平面形声学镜头 (11.8毫米光圈) 空间分布1MHz超声波能量,以创建多个焦点.
    • 光学连贯断层扫描 (OCT) 检测到由此产生的反响剪切波场.

    主要成果:

    • 该系统成功地在目标平面上生成了多个焦点.
    • 反射波切割波场被OCT系统有效地产生和检测到.
    • 机械性质的高分辨率探测在层叠的凝幻影中得到了证明.

    结论:

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    Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
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    Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
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    • 开发的多焦声波辐射力源对Rev-OCE应用有效.
    • 这种方法可以精确地控制剪切波生成声能的空间能量.
    • 该系统对高分辨率的先进生物力学表征有很大的希望.