Abstract：
:This article reviews the role of cavitation in the therapeutic applications of ultrasound and laser surgery, and the cavitation effects in mechanical heart valves. Whenever laser pulses are used to ablate or disrupt tissue in a liquid environment, cavitation bubbles are produced which interact with the tissue. The interaction between cavitation bubbles and tissue during pulsed laser surgery may cause collateral damage to sensitive tissue structures in the vicinity of the laser focus, and it may also contribute in several ways to ablation and cutting. Cavitation is also one of the most exploited bioeffects of ultrasound for therapeutic advantage. In both cases, the violent implosion of cavitation bubbles can lead to the generation of shock waves, high-velocity liquid jets, free radical species, and strong shear forces that can damage the nearby tissue. Knowledge of these physical mechanisms is therefore of vital importance and would provide a framework wherein novel and improved surgical techniques can be developed.
journal_name
Med Eng Physjournal_title
Medical engineering & physicsauthors
Brujan EAdoi
10.1016/j.medengphy.2009.03.007subject
Has Abstractpub_date
2009-09-01 00:00:00pages
742-51issue
7eissn
1350-4533issn
1873-4030pii
S1350-4533(09)00078-2journal_volume
31pub_type
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