Method for operating a magnetic resonance imaging apparatus

摘要

In a steady-state pulse sequence having a repetition time and a flip angle alpha with alternating polarity for operating a magnetic resonance imaging apparatus, the excursion of the magnetization in the steady-state condition moves between a first value + alpha /2 and a second value - alpha /2. Before the beginning of the pulse sequence, a radiofrequency pulse having a flip angle alpha /2 is emitted before the first excitation pulse. The steady-state condition is thus reached earlier and a spin preparation can be implemented which is still effective when imaging data are acquired.