MAGNETIC RESONANCE-IMAGING SYSTEM

PROBLEM TO BE SOLVED: To provide an MRI system which can effectively prevent the generation of an unintended fake image due to an addition of prepulse, independently of imaging conditions. SOLUTION: The system has an irradiation means which generates a high-frequency magnetic field to be exposed to a subject in a static magnetic field, a receiving means which receives echo signals from the subject, a measurement control means which controls the irradiation means and the receiving means based on a given pulse sequence, wherein the pulse sequence consists of a prepulse part having prepulse and a main measurement part measuring the echo signals, and the measurement control means characteristically changes irradiation phases of prepulse for each irradiation. COPYRIGHT: (C)2009,JPO&INPIT