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Depending on the frequency and focusing, ultrasound energy can target any structure in the body. In dermatology, its use has been studied primarily for melting fat, but skin tightening might be possible as well. In this industry-sponsored, rater-blinded, prospective study, 35 subjects underwent a single focused ultrasound treatment of the face and neck.
Treatment was delivered via a focused ultrasound device that lays down rows of small thermal coagulation zones (approximate size, 0.5–0.75 mm by 1.0–1.5 mm), spaced about 1.5 mm apart and deposited at a proximity of about 4 mm from the skin surface, depending on the probe used. The rows were placed 3–5 mm apart. Real-time diagnostic ultrasound was used first to determine skin thickness and to…