Digital Unit 1 & 3 MHz Ultrasound Therapy Physical Stress Relief Therapy Machine
The gel is used on all surfaces of the head to reduce friction and assist transmission of the ultrasonic waves. Therapeutic ultrasound in physical therapy is alternating compression and rarefaction of sound waves with a frequency of 0.7 to 3.3 MHz Maximum energy absorption in soft tissue occurs from 2 to 5 cm.