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In ultrasound contrast imaging, a large discrimination between ultrasound contrast agents (UCA) and surrounding tissues is expected. However, the native tissue-harmonics generated during wave propagation in tissues limit the contrast-to-tissue ratio (CTR). Therefore, these harmonics need to be reduced to further increase the CTR. In this paper, a new strategy, called double pulse inversion (DPI) by...
In ultrasound contrast harmonic imaging, the generated harmonics during wave propagation in tissues lead to a limited contrast-to-tissue ratio (CTR). Second-harmonic inversion (SHI), based on two 90° phase-shifted transmissions with the same frequencies and amplitudes, can effectively reduce the tissue-harmonic signals and improve CTR. However, the bubbles motion strongly influences the SHI effectiveness...
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