What is Chiropractic Ultrasound? Chiropractic ultrasound—also referred to as therapeutic ultrasound therapy or ultrasonic therapy—is a hands-on, drugless therapy that uses high frequency sound waves to ease back and joint pain. Chiropractors often use chiropractic ultrasound as part of an overall treatment plan for dealing with injuries and chronic pain. Some chiropractors use specialized devices to emit these sound waves …