Medical ultrasound imaging was first introduced in the early 1950s. Since that time, it has become one of the most important modalities for imaging soft tissues. It remains the only imaging modality that can produce real-time tomographic images of intact tissues with sub millimeter resolution. Research in my group is primarily concerned with the development of new transducers and instrumentation for medical ultrasound imaging. We are current developing scanners for high frequency imaging and real-time 3-D imaging