Patent ID: 7196518

Claim:
A magnetic resonance imaging device which is provided with a magnetic field generation means which respectively generates a high frequency magnetic field and a gradient magnetic field in a space where a static magnetic field is formed, a signal processing means which detects a nuclear magnetic resonance signal generated from an inspection subject placed in the space and reconstructs an image therefrom and a display means which displays the reconstructed image, wherein the signal processing means performs, by making use of at least two nuclear magnetic resonance signals having different times TE from irradiation of the high frequency magnetic field signal to generation of the nuclear magnetic resonance signals, a computation determining a phase offset distribution between the generated nuclear magnetic resonance signals, and wherein the signal processing means performs an unwrap processing in which an unwrap processing state map is generated and a principal value of rotation caused in the computation determining the phase offset distribution is corrected, and at the same time, performs a judgement as to whether the unwrap processing is proper based on a consistency of values of a same point obtained by the unwrap processing in at least two different directions of the unwrap processing state map.