title: Design and implementation of high frequency ultrasound pulsed-wave Doppler using FPGA.
abstract: The development of a field-programmable gate array (FPGA)-based pulsed-wave Doppler processing approach in pure digital domain is reported in this paper. After the ultrasound signals are digitized, directional Doppler frequency shifts are obtained with a digital-down converter followed by a low-pass filter. A Doppler spectrum is then calculated using the complex fast Fourier transform core inside the FPGA. In this approach, a pulsed-wave Doppler implementation core with reconfigurable and real-time processing capability is achieved.
authors.forename: Chang-hong
authors.initials: CH
authors.lastname: Hu
authors.forename: Qifa
authors.initials: Q
authors.lastname: Zhou
authors.forename: K Kirk
authors.initials: KK
authors.lastname: Shung
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers; D018608:Ultrasonography, Doppler / Q000295:instrumentation*