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- W2142063553 abstract "Contrast-enhanced ultrasound imaging creates one of the worst case scenarios for pulse compression due to depth and frequency dependent attenuation, high level of harmonic generation, phase variations due to resonance behavior of microbubbles, and increased broadband noise by microbubble destruction. This study investigates the feasibility of pulse compression with a matched filter in the existence of microbubbles with resonant behavior. Simulations and experimental measurements showed that the scattered pressure from a microbubble population excited by a chirp waveform preserves its chirp rate even for harmonic frequencies. Although, pulse compression by a matched filter was possible due to the conservation of the chirp rate, an increase on sidelobe levels were observed at fundamental and second harmonic frequencies. Therefore, using chirp excitation and a matched filter pair will increase the contrast-to-tissue ratio with a trade-off of decreased image quality." @default.
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- W2142063553 date "2015-10-01" @default.
- W2142063553 modified "2023-09-26" @default.
- W2142063553 title "Contrast-enhanced ultrasound imaging with chirps: Signal processing and pulse compression" @default.
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- W2142063553 doi "https://doi.org/10.1109/ultsym.2015.0160" @default.
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