US 12,392,854 B2
Magnetic resonance image processing method and device, and computer readable storage medium
Hanbei Zhang, Beijing (CN); Yongchuan Lai, Beijing (CN); Pengfei Lu, Beijing (CN); Zhao Wang, Beijing (CN); and Pengshuai Wang, Beijing (CN)
Assigned to GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed by GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed on Dec. 1, 2021, as Appl. No. 17/540,104.
Claims priority of application No. 202011613176.6 (CN), filed on Dec. 30, 2020.
Prior Publication US 2022/0206097 A1, Jun. 30, 2022
Int. Cl. G01R 33/565 (2006.01); G01R 33/24 (2006.01); G01R 33/34 (2006.01); G01R 33/54 (2006.01); G01R 33/56 (2006.01)
CPC G01R 33/5659 (2013.01) [G01R 33/246 (2013.01); G01R 33/34092 (2013.01); G01R 33/543 (2013.01); G01R 33/5608 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A magnetic resonance image processing method, comprising:
determining a central angle;
converting, on the basis of the central angle, a radio-frequency field pattern

OG Complex Work Unit Math
 of a radio-frequency transmitting coil into an angular pattern (θ), wherein the radio-frequency field pattern of the radio-frequency transmitting coil is obtained by performing an offline simulation of the radio-frequency transmitting coil, wherein the radio-frequency field pattern represents an intensity distribution of a radio-frequency field;
acquiring, on the basis of a trigonometric function value of the angular pattern, a radio-frequency transmitting field pattern

OG Complex Work Unit Math
 of the radio-frequency transmitting coil;
dividing a magnetic resonance image by the radio-frequency transmitting field pattern of the radio-frequency transmitting coil to generate a corrected magnetic resonance image;
dividing the corrected magnetic resonance image by the radio-frequency field pattern of the radio-frequency transmitting coil to obtain a further corrected image;
the method further comprising: determining at least one weight parameter, and adjusting, on the basis of the at least one weight parameter, the trigonometric function value of the angular pattern, wherein the radio-frequency transmitting field pattern is acquired on the basis of the adjusted trigonometric function value; and
wherein the radio-frequency transmitting field pattern is acquired on the basis of an equation

OG Complex Work Unit Math
where

OG Complex Work Unit Math
 is the radio-frequency transmitting field pattern, C1 is a first weight parameter, C2 is a second weight parameter, Cn is a nth weight parameter, n is the counts of adjusting the trigonometric function value, θ is an angle value in the angular pattern, and f(θ) is a trigonometric function with θ as an independent variable.