Therapeutic modalities

Introduction The term “ultrasound” describes mechanical vibrations that are fundamentally higher frequency versions of sound waves. Since these waves are inaudible to humans, they are referred as “ultrasonic”. Ultrasonic frequencies range from 20kHz to 10GHz, Whereas normal sound waves ranges from 20Hz to 20,000Hz.Despite being produced electrically, ultrasound is not precisely an electrotherapy because it […]