US 12,455,335 B2
Method and device for water-fat separation of image, computer apparatus, and computer-readable storage medium
Li Tong, Shanghai (CN); Tao Sun, Shanghai (CN); and Yang Xin, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on May 22, 2023, as Appl. No. 18/200,537.
Claims priority of application No. 202210571362.0 (CN), filed on May 24, 2022.
Prior Publication US 2023/0384407 A1, Nov. 30, 2023
Int. Cl. G01R 33/56 (2006.01); G01R 33/48 (2006.01); G06T 5/70 (2024.01); G06T 7/00 (2017.01); G06T 7/11 (2017.01)
CPC G01R 33/5607 (2013.01) [G01R 33/4828 (2013.01); G06T 5/70 (2024.01); G06T 7/0012 (2013.01); G06T 7/11 (2017.01); G06T 2200/04 (2013.01); G06T 2207/10088 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for water-fat separation of image, comprising:
obtaining a plurality of echo images of a target object;
obtaining an initial water and fat distribution image of the target object;
determining a first error phasor candidate and a second error phasor candidate, the first error phasor candidate being used to represent an error phasor of each element corresponding to water occupying a major constituent in the element, and the second error phasor candidate being used to represent an error phasor of each element corresponding to fat occupying a major constituent in the element;
determining an initial-guess of error phasor corresponding to each element in the plurality of echo images among the first error phasor candidate and the second error phasor candidate based on the initial water and fat distribution image; and
determining an optimal error phasor based on the initial-guess of the error phasor, and acquiring a water image and a fat image of the target object from the plurality of echo images according to the optimal error phasor.