Laser ablation of calcific plaque in human arteries has been demonstrated with visible radiation at intensities (107 W/cm2) that are readily transmitted by flexible (320 μm diameter) quartz optical fibers. The ablative mechanism involves formation of a plasma with mechanical fragmentation of the plaque by stress waves rather than simply thermal vaporization. By appropriate selection of laser pulse duration (<50 μsec), wavelength and exposure, the laser pulse can ablate the calcified plaque but will not ablate normal artery. These optimized laser parameters may enhance the safety and efficacy of laser endarterectomy.


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    Title :

    Pulsed Laser Ablation Of Calcified Plaque


    Contributors:

    Conference:

    Optical Fibers in Medicine III ; 1988 ; Los Angeles,CA,United States


    Published in:

    Publication date :

    1988-06-21





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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