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Related Experiment Videos

[Advanced Dynamic Flow]

Takeshi Sato1

  • 1Ultrasound Systems Development Department Medical Systems Company, Toshiba Corporation. takeshi.sato@toshiba.co.jp

Igaku Butsuri : Nihon Igaku Butsuri Gakkai Kikanshi = Japanese Journal of Medical Physics : an Official Journal of Japan Society of Medical Physics
|May 27, 2003
PubMed
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Dynamic Flow imaging overcomes limitations of conventional contrast imaging with Levovist. Advanced Dynamic Flow (ADF) offers superior resolution, reduced blooming, and enhanced bubble detectability for clearer visualization.

Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Contrast-Enhanced Ultrasound

Background:

  • Conventional Doppler, 2nd harmonic imaging, and pulse inversion imaging face challenges with Levovist contrast agent.
  • High mechanical index (MI) required for Levovist leads to poor resolution, blooming, and tissue harmonic interference (THI).
  • Bubble collapse under high MI hinders continuous visualization of Levovist microbubbles.

Purpose of the Study:

  • To introduce and evaluate Dynamic Flow and Advanced Dynamic Flow (ADF) imaging techniques for contrast imaging with Levovist.
  • To address the limitations of existing ultrasound modes in visualizing Levovist microbubbles.
  • To enhance the sensitivity, resolution, and detectability of microbubbles in ultrasound contrast imaging.

Main Methods:

Related Experiment Videos

  • Dynamic Flow imaging utilizes Doppler principles with improved resolution and reduced blooming.
  • Advanced Dynamic Flow (ADF) further enhances sensitivity and presentation capabilities.
  • Evaluation of bubble detectability, penetration, and image quality in various vessel sizes and depths.

    • Main Results:

    • Dynamic Flow provides higher resolution and less blooming compared to conventional Doppler.
    • ADF offers superior bubble detectability, comparable to B-mode imaging, with enhanced penetration and uniform enhancement.
    • ADF effectively visualizes microbubbles in smaller vessels and maintains high frame rates.

    Conclusions:

    • Dynamic Flow and ADF significantly improve ultrasound contrast imaging with Levovist.
    • ADF provides excellent visualization of microbubbles, even in small vessels, with improved penetration.
    • ADF is highly suitable for Levovist contrast imaging and can also be used for non-contrast imaging of small vessels.