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://tiannambvm835266.wikiannouncement.com/8677372/1_mhz_ultrasound_therapy_device_for_pain_relief