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Fat removal procedures are used mostly in cosmetic surgery with the intention of removing unwanted adipose tissue. The procedure may be invasive, as with liposuction, [1] or noninvasive using laser therapy, radiofrequency, ultrasound or cold (cryoablation or cryolipolysis) to reduce fat, sometimes in combination with injections. [2] [3]
Cryolipolysis (commonly referred to as "fat freezing") is a non-invasive procedure for fat removal that uses extreme cold to freeze subcutaneous adipose tissue in specific areas of the body. This process aims to reduce localized fat deposits. [1] [2] [3]
Ultrasound-assisted liposuction techniques used in the 1980s and 1990s were associated with cases of tissue damage, usually from excessive exposure to ultrasound energy. [28] Third-generation UAL devices address this problem by using pulsed energy delivery and a specialized probe that allows physicians to safely remove excess fat. [ 29 ]
Sharp said she was getting a facial at a medical spa when she saw advertisements for CoolSculpting, the body contouring procedure that aims to reduce fat via a method called cryolipolysis.
Ultrasonic cavitation device is a surgical device using low frequency ultrasound energy to dissect or fragment tissues with low fiber content. It is basically an ultrasound probe (acoustic vibrator) combined with an aspirator device ( suction ).
As an ultrasound acoustic wave cannot propagates through the compressive tissue, such as rubber, human tissues part of it and the ultrasound energy will be turned to converted as heat, with focused beams, a very small region of heating can be achieved the part of shallow deep in tissues (usually on the order of 2~3 millimeters).
Because cavitation can only occur in liquids, chemical reactions are not seen in the ultrasonic irradiation of solids or solid–gas systems. For example, in chemical kinetics , it has been observed that ultrasound can greatly enhance chemical reactivity in a number of systems by as much as a million-fold; [ 15 ] effectively acting to activate ...
Ultrasonic cavitation inception will occur when the acceleration of the ultrasound source is enough to produce the needed pressure drop. This pressure drop depends on the value of the acceleration and the size of the affected volume by the pressure wave. The dimensionless number that predicts ultrasonic cavitation is the Garcia-Atance number.
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