2017 Imaging for Physicists Coursebook

bSSFP artifact

• Balanced Steady State Free Precession

also known as:

– bTFE, bFFE (Philips) – trueFISP (Siemens) – FIESTA (GE)

• Steady state depends on T 1 2 • Spins from many excitations create a steady state of precessing spins • B0 distortions (susceptibility) result in spins that are off-resonance and don’t see the RF pulses. Thus they don’t produce a signal and T

bSSFP artifacts at rectum prostate interface