2016_Imaging for Physicists

• Fluctuating magnetic fields from the molecular environment may have Larmor frequency→ stimulated transitions may occur • After an RF-pulse, the z-component of M relaxes back to equilibrium via such stimulated T1 relaxation transitions • Longitudinal relaxation, Spin lattice relaxation, T1 relaxation • Rate of relaxation: R1=1/T1

Varies between tissues