2016_Imaging for Physicists

Many reasons for artifacts

• Magnetic field errors – Gradient artifacts

– Susceptibility artifacts – Water-fat shift

• Geometrical artifacts show up in a particular direction

zyx B ) , ,(

G zyxB x x x ) , ,( ∆

∆ +=

+

0

1

G

G

x

x

G B y y y ∆ +=

1

G

y