Royal Philips Electronics, Bothell, Wash, offers the SONOS 7500 ultrasound system with Live 3D Echo, enabling cardiologists to obtain real-time, three-dimensional images of the beating heart. Live 3D Echo allows cardiologists to view the heart instantaneously, viewing it from different perspectives and looking at the intricate correlation between valves, chambers, and vessels. (800) 722-7900; .