FAIR EXCLUDING RADIATION DAMPING (FAIRER)

It is shown that the flow-sensitive alternating inversion recovery (FA IR) technique is complicated by the effect of radiation damping, leadi ng to problems in calibrating this method on phantoms and to inaccurac ies in measured flows. A modified scheme called FAIRER (FAIR excluding radiation damping) is proposed, which suppresses the damping effects by employing very weak magnetic field gradients (0.06 G/cm) during the inversion recovery, spin-echo, and predelay periods, Results on phant oms and in vivo on cat brain are presented that demonstrate that FAIRE R effectively solves these problems.