| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve shear wave velocity estimation, frame rates and spatial resolution while optimizing ultrasound radiation dosage. <P>SOLUTION: A method includes delivering reference pulses to a plurality of target regions (102) to detect corresponding initial positions. Further, a plurality of pushing pulse segments are delivered to pushing locations, where parameters corresponding to the plurality of pushing pulse segments are adapted for generating a shear displacement waveform with a desired wave shape. Additionally, tracking pulses may be delivered to the plurality of target regions (102) for detecting displacements of at least a subset of the target regions (102) as a function of time. Particularly, the displacements are determined as time samples of the shear displacement waveform. Subsequently, a shift between the shear displacement waveform detected at least two different target regions (102) in the subset of the plurality of target regions (102) is detected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
