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- W4310584039 abstract "Coherent pixel-based beamforming has been developed for generating uniform high-resolution ultrasound images. It is based on the conventional architecture of ultrasonic systems using fixed-focused beams to acquire data. The image generation, however, is time-consuming as it requires data superposition from a large number of transmits. In this study, we integrate a frequency-domain beamforming framework with pixel-based beamforming, which allows image generation with a sub-Nyquist sampling of the radio-frequency (RF) echo signals. With this sub-Nyquist sampling technique, the front-end sampling system can work at a much lower rate to get the required bandwidth of RF echo signals. As a result, the proposed beamformer can offer almost comparable image resolution and contrast with coherent pixel-based beamforming with a 9-fold sampling reduction. The experimental results demonstrated the performance of the proposed beamformer, showing its potential in applications on low-power consumption and small-size ultrasound systems." @default.
- W4310584039 created "2022-12-12" @default.
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- W4310584039 date "2022-10-10" @default.
- W4310584039 modified "2023-09-30" @default.
- W4310584039 title "Fourier-Domain Beamforming and Sub-Nyquist Sampling for Coherent Pixel-Based Ultrasound Imaging" @default.
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- W4310584039 doi "https://doi.org/10.1109/ius54386.2022.9958356" @default.
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