公开(公告)号：US20170184716A1

公开(公告)日：2017-06-29

申请号：US15385087

申请日：2016-12-20

申请人： ESAOTE S.p.A.

发明人： Giovanni BINI

IPC分类号： G01S7/52 ,  A61B8/00

CPC分类号： G01S7/52095 ,  A61B8/4444 ,  A61B8/4483 ,  G01S7/52026 ,  G01S7/52047 ,  G01S7/52092 ,  G10K11/346

摘要： Methods and systems are provided that perform baseband beamforming of ultrasound signals. The methods and systems obtain receive signals from transducers of an ultrasound probe and demodulate the receive signals to obtain complex receive signals having in-phase (I) and quadrature (Q) components. The methods and systems apply time delay and phase correction to the complex receive signals to form delayed complex receive signals before summing the delayed complex receive signals to produce a coherent receive signal. The phase correction includes applying coarse and fine corrections where the coarse correction is calculated as a multiple of a sampling time and the fine correction is calculated as a fraction of the sampling time. The methods and systems apply the coarse and fine corrections contemporaneously by multiplying the complex receive signal by a complex carrier delayed by a multiple of the sampling time and delayed by the fraction of the sampling time.