MAGNETIC RESONANCE IMAGING APPARATUS AND RF PULSE ADJUSTMENT METHOD

摘要

An RF pulse adjustment method comprises: a setting step of setting the irradiation gain of an RF pulse for irradiating a subject disposed in a static magnetic field in order to perform the gain adjustment of an irradiation pulse more precisely and shortly; RF pulse irradiation step of irradiating the subject with the RF pulse with the set irradiation gain; a receiving step of obtaining a echo signal generated from the subject; a repeat step of repeating each step a plurality of times while changing the irradiation gain; and a irradiation gain determination step of obtaining the irradiation gain corresponding to a desired flip angle of the RF pulse on the basis of each echo signal obtained by the RF pulse with different irradiation gain.  In the irradiation step, slice selection positions, at which at least two RF pulses with different irradiation gains are irradiated, are made differ over the subject.