HISTORY
   Most of the studies conducted in the beginning of the 
   century, dedicated to his "destructive" effect. The 
   destructive effect of the ultrasound is only indirectly 
   related to the mechanism of its therapeutic action, 
   because the magnitude of ultrasonic treatments is 
   very far from damaging doses of this factor. However, 
   the analysis of the experimental data obtained in 
   studying the effect of high intensity ultrasound is of 
   great interest and may to some extent characterize 
   the mechanism of its therapeutic action.
      Ultrasonic for therapeutic
                It is known that the elastic wave acts on the tissues 
  and the elastic wave causes their biological changes. Interest 
  in the study of this problem is due to the possible risk of the 
  use of the ultrasonic diagnostic systems for imaging, and the 
  ability to induce changes in tissues for therapeutic effect.
               Effect of ultrasound on the body depends on the 
  power of ultrasonic vibrations, their frequency, duration, 
  method of radiation of ultrasonic energy (continuous, pulsed), 
  tissue sensitivity, intensity, vascularity and the state of 
  metabolism in the tissues. The ultrasonic wave affects the 
  physico-chemical and biological processes that occur in these 
  tissues. The most sensitive to contact high-frequency 
  ultrasound are the autonomic and peripheral nervous system.
     Ultrasonic for therapeutic
  ULTRASONIC WAVES THERE ARE THREE TYPES, 
  WHICH DIFFER IN THE INTENSITY:
  • 1. Low-intensity ultrasound (1.5 W/sm2). 
  • 2. The average ultrasound intensity (1.5–3 
   W/sm2). 
  • 3. Ultrasound of high intensity (> 3 W/sm2). 
      Ultrasonic for therapeutic
  • Your heart rate increases during the ultrasound, changes ECG. 
   The increase of ultrasound intensity leads to arrhythmia, and 
   in some cases cardiac arrest (in experimental animals). The 
   same reactions are observed in people: you experience 
   discomfort when dubbing the thorax, subsequently 
   developed tachycardia and angina.
  • High-frequency and low-intensity ultrasound (0.2 to 1 
   W/sm2) induces a vasodilator effect, high intensity (> 3 
   W/sm2) is a vasoconstrictor and the arteries tone is change. 
   Low-intensity ultrasound provides (makes) hypotensive effect, 
   in the increase of its intensity occurs (makes) hypertension.
     Ultrasonic for therapeutic
  • Changes in the kidneys, liver, reproductive 
   organs, endocrine glands occur as a result of 
   ultrasound effect on the hypothalamus, which 
   regulates the activity of internal organs reflex 
   and neurohumoral pathways. There is a 
   change in the morphological composition of 
   the blood; the number of erythrocytes and 
   leukocytes are decrease.