Steven M. Gitt, MD, FACS (in memoriam) says:While both devices utilize ultrasound technology, Liposonix is High-Intensity Focused Ultrasound (HIFU), and UltraShape uses Focused, Pulsed Ultrasound. Believe it or not there is a difference. Liposonix uses ultrasound waves to create heat to destroy the fat cells, where UltraShape utilizes t...