| 摘要 |
An ultrasound imaging system includes an ultrasound probe having an array of transducer elements (12) divided into a plurality of contiguous transmit sub-apertures (14 a,b,c,d,e). A plurality of transmitters coupled to the sub-apertures of the ultrasound transducer apply respective transmit signals to the sub-apertures at different frequencies and with delays that cause respective transmit beams emanating from the sub-apertures to overlap each other in a region of interest (20). A multiline beamformer coupled to the transducer elements processes signals corresponding to ultrasound echoes to output image signals. A processor receives the image signals from the multiline beamformer and outputs image data corresponding to the image signals. The image data are processed by an image processor to output corresponding display signals that are applied to a display.
|
