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Parallel receive beam forming is not optimal for harmonic imaging, as employing a wide beam or plane wave in transmission results in the generation of lower absolute pressure values, when compared to focused ultrasound beams, and conflicts with the demand for high-amplitude pressure wave fields necessary to generate the harmonic components. On the contrary, parallel transmit beam forming can be more...
In ultrasound contrast imaging, many techniques based on multiple transmissions have been proposed to increase the contrast-to-tissue ratio (CTR). They are generally based on the response of static scatterers inside the imaged region. However, scatterer motion, for example in blood vessels, has an inevitable influence on multi-pulse techniques, which can either enhance or degrade the technique involved...
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