Yet, until these studies are incomplete. But it is certain that, if only theoretically used, for example, the frequency of 1 MHz and intensity of the ultrasound beam on a single zone, equal to more than 30 V / cm square. (A higher power, because according to current standards denotes the limit of equal to 3 V / cm-sq.) Would be recorded rapid growth of many micro-bubbles, which in a few microseconds would have provoked the strongest implosion: as a result, would significantly increase the temperature and pressure at the surface smaller than the first one square millimeter, with the expansion of nearby cells and tissues. Another well-known parameter, it is a constant threshold cavitation in water, which is equal to about 100 mW/cm2, whereas the threshold unstable cavitation in water is 1 W/cm2. The latter threshold is directly proportional to the dispersion of gas in a liquid medium, temperature and viscosity of the fluid itself (this means you need to slightly increase the power handling of live tissues and biological fluids). ‘ll Make it a concrete example. When is the echographic study during pregnancy, the fetus is in amniotic fluid, so power should be below 100 mW/cm2 precisely in order to avoid the effects of cavitation.
And, conversely, to obtain this effect it is necessary to resort to power above the designated threshold (1 W/cm2) and low frequency from 0,02 – 0,03 MHz, but not to exceed a threshold of 0.03 MHz, which is a conditional limit the use of ultrasounds in aesthetic medicine. In conclusion, it should be noted that only the anatomy of the human body is able to give a complete picture of the location of the arteries and veins, glands and internal organs, which may be inadvertently affected by the low-frequency ultrasound. Viatris contributes greatly to this topic. Important as the location and depth of cellulite and fatty deposits. These are the main parameters that determine the choice of intensity used during a session of power and frequency. In reality, namely power and frequency are usually a criteria by which to evaluate existing equipment on the market, while not forgetting about such parameters such as: type and size of single or complex handles, especially emitted ultrasounds, possible presence of a source of local cooling, an influence on the thermal effect of ultrasound.