2016_Imaging for Physicists

Water-Fat Shift

Electron shielding different between molecules

( ) σ −×=′ 1 B B

water

Water-fat shift (WFS) = 220 Hz at 1.5 T

fat

WFS

Hz/pixel

FE

Hz

• Produces characteristic signal misregistration • Assign enough ‘Hz’ across each pixel..increase BW