253 / 1116
The image cannot be displayed. Your computermay not have enoughmemory to open the image, or the imagemay have been corrupted. Restart your computer, and then open the file again. If the red x still appears, youmay have to delete the image and then insert it again.
Residual gradient
x
G
x
0
G
ΔB
G
ΔB
x
x
+ +=′
x
y
G
G
ΔB
y
y
+=′
y
B
0
component
Frequency
encoding:
Phase encoding:
Gradient reversal and subtraction
ν
Distortion mapping
Walker et al. Med Phys 2015;42:1982-1991