	US 12,471,886 B2
	Filtering method and system for ultrasonic imaging
Yaowen Zhang, Wuhan (CN); and Yihui Da, Wuhan (CN)
Assigned to WUHAN UNITED IMAGING HEALTHCARE CO., LTD., Wuhan (CN)
Filed by WUHAN UNITED IMAGING HEALTHCARE CO., LTD., Hubei (CN)
Filed on Feb. 6, 2024, as Appl. No. 18/434,769.
Application 18/434,769 is a continuation of application No. PCT/CN2022/131156, filed on Nov. 10, 2022.
Claims priority of application No. 202210052438.9 (CN), filed on Jan. 18, 2022.
Prior Publication US 2024/0206851 A1, Jun. 27, 2024
Int. Cl. A61B 8/00 (2006.01); A61B 8/14 (2006.01)

CPC A61B 8/488 (2013.01) [A61B 8/14 (2013.01); A61B 8/5207 (2013.01); A61B 8/5223 (2013.01)]

20 Claims

1. A filtering method for ultrasonic imaging, comprising:

obtaining a plurality of pulse Doppler echo signals, two adjacent pulse Doppler echo signals being distributed at intervals in a time domain;

generating a plurality of discontinuous segments of IQ data by demodulating the plurality of pulse Doppler echo signals;

for each segment of IQ data:

performing first filtering on at least part of data points, and

obtaining a segment of filtered IQ data by performing second filtering on the filtered data points and unfiltered data points; and

generating a spectrum image based on a plurality of segments of filtered IQ data.