Chattanooga Group - Major manufacturer of rehabilitative electrotherapy and ultrasound devices and ultrasound devices. Physiomed Elektromedizin GmbH - Manufacturer of therapeutic ultrasound devices. (Germany) Rich-Mar Corporation - A web site designed for physical therapists, Rich-Mar provides a complete product line of ultrasound and stimulation equipment. Ultrasound Treatment for Hurt Muscles Doesn't Promote Healing - Review of a study on ultrasound muscle healing performed at Ohio State University. Keitzer Manufacturing USA - Sells US transmitters for physical therapy EZUltrasound - Provider of portable home ultrasound machines to speed healing and relieve pain. Sonotron Medical Systems Inc. - Offers an electronic therapeutic device that reduces pain and edema while increasing range of movement in joints. SRA Developments - Developer and manufacturer of ultrasonic products for medical applications.