US 11,989,804 B2
Systems and methods for medical imaging
Xin Hao, Shanghai (CN); and Xiang Li, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on Sep. 29, 2021, as Appl. No. 17/449,450.
Application 17/449,450 is a division of application No. 16/181,403, filed on Nov. 6, 2018, granted, now 11,138,770.
Claims priority of application No. 201711087639.8 (CN), filed on Nov. 6, 2017; and application No. 201711459837.2 (CN), filed on Dec. 28, 2017.
Prior Publication US 2022/0020186 A1, Jan. 20, 2022
Int. Cl. G06T 11/00 (2006.01); A61B 5/00 (2006.01); A61B 5/346 (2021.01); A61B 5/352 (2021.01); A61B 6/00 (2006.01); A61B 6/03 (2006.01); A61B 6/50 (2024.01); G06T 7/00 (2017.01); A61B 5/0245 (2006.01)
CPC G06T 11/008 (2013.01) [A61B 5/0044 (2013.01); A61B 5/346 (2021.01); A61B 5/352 (2021.01); A61B 5/7207 (2013.01); A61B 5/7267 (2013.01); A61B 5/7285 (2013.01); A61B 6/032 (2013.01); A61B 6/503 (2013.01); A61B 6/504 (2013.01); A61B 6/5205 (2013.01); A61B 6/5264 (2013.01); A61B 6/5288 (2013.01); G06T 7/0012 (2013.01); A61B 5/0245 (2013.01); G06T 11/006 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/10088 (2013.01); G06T 2207/10104 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/30048 (2013.01); G06T 2207/30168 (2013.01); G06T 2210/41 (2013.01); G06T 2211/424 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for analyzing an R-wave of an electrocardiogram (ECG) signal implemented on a computing device having one or more processors and one or more storage devices, the method comprising:
obtaining an original ECG signal of a subject;
filtering the original ECG signal;
determining whether to trigger a search gate based on the filtered ECG signal, wherein the search gate is an instruction for detecting an R-wave on the original ECG signal; and
detecting the R-wave on the original ECG signal in response to a determination of triggering the search gate, wherein
the determining whether to trigger a search gate based on the filtered ECG signal includes:
determining a differential signal based on the filtered ECG signal;
determining an amplified signal based on the differential signal; and
determining to trigger the search gate in response to that the amplified signal is equal to or greater than a gate threshold.