Ultrasound therapy utilizes sound waves at/of/with a/an/high frequency to/for/in order to alleviate/relieve/reduce pain. A/An/The 1 MHz ultrasound therapy device, specifically/particularly/especially designed for this https://montyzlck098080.mpeblog.com/63382183/ultrasound-therapy-with-a-1-mhz-device-a-new-approach-to-pain-relief