In-room imaging and MR planning

In and Out-of-Phase (DIXON) Imaging

• Fat and water have different resonance frequencies (220 Hz at 1.5 T) • At specific TEs fat and water are either in phase (=1/220 Hz or every 4.6 ms) or out of phase • Four image contrasts obtained (useful in MR-only)

Fat only

Out-Phase

In-Phase

oil

Water only

water