Patent ID: 7511490

Claim:
A magnetic resonance imaging apparatus having: a high frequency magnetic field applying means for applying a high frequency magnetic field for exciting a spin of an object to be inspected in a static magnetic field; a gradient magnetic field applying means for applying gradient magnetic fields to a slice selection direction, a phase encoding direction, and a frequency encoding direction of the object to be inspected in the static magnetic field; and an image generating means for generating a sectional image of the object to be inspected based on a magnetic resonance signal from the object to be inspected to which the high frequency magnetic field and the gradient magnetic field are applied, wherein the high frequency magnetic field applying means applies the high frequency magnetic field in a repetition time where both of a transverse magnetization and a longitudinal magnetization of the spin of the object to be inspected become a steady state, and the gradient magnetic field applying means applies gradient magnetic fields in the slice selection direction, the phase encoding direction, and the frequency encoding direction so that they become symmetric in a time direction with respect to the high frequency magnetic field in the repetition time and, at the same time, applies gradient magnetic fields so that an integrated value of time of the gradient magnetic field in each of the phase encoding direction and the frequency encoding direction becomes zero in the repetition time and the integrated value of time of the gradient magnetic field in the slice selection direction becomes a predetermined value which is not zero in the repetition time.