304 / 945
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
|
|
304 / 945
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