List An integrated circuit with transmit beamforming and parallel receive channels for real-time three-dimensional ultrasound imaging Author I. O. Wygant, H. J. Lee, A. Nikoozadeh, Ö. Oralkan, M. Karaman, and B. T. Khuri-Yakub* Conference Proc. IEEE Ultrason. Symp., Vancouver, Canada, pp. 2186-2189 Year 2006 .