Continuous-time High-Pass filtering for real-time HFR Color Flow Imaging

In conventional Color Flow Imaging (CFI) systems, a low number of pulses (typically ≤16) is transmitted along each scan line. Such limitation affects high-pass-filtering (HPF), and the subsequent Doppler frequency estimation, but may be overcome through the transmission of plane waves (PW). In this paper, we present a PW CFI system that implements continuous-time (CT) HPF to produce, in real-time, images with high temporal resolution.