Direct in vivo visualization of intravascular destruction of microbubbles by ultrasound and its local effects on tissue

Danny M. Skyba, Richard J. Price, Andre Z. Linka, Thomas C. Skalak, Sanjiv Kaul

    Research output: Contribution to journalArticle

    402 Scopus citations

    Abstract

    Background--Our aim was to observe ultrasound-induced intravascular microbubble destruction in vivo and to characterize any resultant bioeffects. Methods and Results--Intravital microscopy was used to visualize the spinotrapezius muscle in 15 rats during ultrasound delivery. Microbubble destruction during ultrasound exposure caused rupture of ≤7-μm microvessels (mostly capillaries) and the production of nonviable cells in adjacent tissue. The number of microvessels ruptured and cells damaged correlated linearly (P<0.001) with the amount of ultrasound energy delivered. Conclusions--Microbubbles can be destroyed by ultrasound, resulting in a bioeffect that could be used for local drug delivery, angiogenesis, and vascular remodeling, or for tumor destruction.

    Original languageEnglish (US)
    Pages (from-to)290-293
    Number of pages4
    JournalCirculation
    Volume98
    Issue number4
    DOIs
    StatePublished - Jul 28 1998

    Keywords

    • Microspheres
    • Tissue
    • Ultrasonics

    ASJC Scopus subject areas

    • Cardiology and Cardiovascular Medicine
    • Physiology (medical)

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