Gradient Echo (GRE)
1. Sequence: Steady-state free precession
Abbr.: SSFP
Physics: Maintenance of a steady, residual transverse magnetisation over successive cycles.
Main Clinical distinctions: Creation of cardiac MRI videos (pictured).
2. Sequence: Effective T2 or "T2-star"
Abbr.: T2*
Physics: Postexcitation refocused GRE with small flip angle.
Main Clinical distinctions: Low signal from hemosiderin deposits (pictured) and hemorrhages.
