| 摘要 |
For ultrasound imaging using Golay-coded excitation for echocardiology, at least three focused and coded beams are transmitted at a fundamental frequency to each transmit focal zone during acquisition of acoustic data for a single image frame. The resulting receive vectors then undergo receive correlation and "slow-time" filtering, i.e., filtering from firing to firing. The "slow-time" filtering is accomplished by multiplying each set of receive correlation filter coefficients by respective scalar weightings before summing the resulting set of filtered receive vectors for subsequent processing to form one image scan line. Employment of more than two firings suppresses the sidelobe response without altering the mainlobe response substantially in the presence of tissue motion after the weighted receive vectors have been summed.
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