Intracardiac Echocardiography Ultrasound technology has progressed rapidly over the past several years, leading to significant miniaturization of transducer design. The original catheter-based transducers, known as intravascular ultrasound (IVUS) catheters, are high frequency (20 to 40 MHz) and are used to image the walls of coronary arteries and other small vessels. They contain a single ultra...