MAGNETIC RESONANCE IMAGING DEVICE

摘要

Provided are a gradient magnetic field pulse in a new shape and having an effect in suppressing noise, and an MRI device that executes a pulse sequence including the gradient magnetic field pulse. The MRI device of the present invention is provided with: a magnetic field application unit that applies high frequency magnetic field pulses and gradient magnetic field pulses in accordance with a pulse sequence describing the timing and the applied strength of the high frequency magnetic field pulses and the gradient magnetic field pulses; and a receiving unit for receiving nuclear magnetic resonance signals generated from a test object because of the magnetic field applied by the magnetic field application unit. The shape of at least one type of the gradient magnetic field pulses included in the pulse sequence is a shape that minimizes noise and is obtained under a condition that the shape satisfies the slew rate of the gradient magnetic field at the magnetic field application unit.