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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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Updated: Jul 10, 2025

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
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Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

Published on: August 21, 2018

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多模式传感器-波导结构与医疗针相连.

Yohann Le Bourlout1, Gösta Ehnholm1, Heikki J Nieminen1

  • 1Medical Ultrasonics Laboratory (MEDUSA), Department of Neuroscience and Biomedical Engineering, Aalto University, Rakentajanaukio 2, Espoo, 02150, Finland.

The Journal of the Acoustical Society of America
|November 22, 2023
PubMed
概括

研究人员使用新型波导开发了一种超声波医疗针. 这项创新提高了精度,并减少了诸如活检和药物输送等程序的力.

科学领域:

  • 生物医学工程 生物医学工程
  • 医疗器械 医疗器械
  • 声学技术 声学技术

背景情况:

  • 医疗针被广泛使用,但功能有限.
  • 目前的针应用主要涉及切割和材料转移.
  • 集成超声波为提高性能和新应用提供了潜力.

研究的目的:

  • 开发一种波导结构,用于转换超声波用于医疗针的应用.
  • 为了在系统中保持高的电声功率效率.
  • 为了实现医疗针的增强功能.

主要方法:

  • 在使用有限元法来优化波导结构的in silico优化.
  • 开发的波导结构的原型设计.
  • 对针的性能进行实验性表征.

主要成果:

  • 实现了30kHz的弹性针尖位移,可达200微米.
  • 证明了73%的电声功率效率.
  • 在低功耗 (5W以下) 时有效运行.

结论:

  • 开发的波导使超声波医疗针具有更高的精度和更低的插入力.

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Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time
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Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time

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Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time
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Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time

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  • 该系统的高效率和低功耗使其易于携带和安全的设计.
  • 潜在的应用包括活检,药物/基因输送和最小侵入性干预.