Patent ID: 8290566

Claim:
A magnetic resonance imaging apparatus configured to acquire magnetic resonance signals from a navigator area containing a plurality of body-moved regions of a subject as first navigator data by repeatedly executing a first navigator sequence, to acquire magnetic resonance signals from the navigator area as second navigator data by repeatedly executing a second navigator sequence, to acquire magnetic resonance signals from an imaging area of the subject as imaging data using an imaging sequence, the imaging data based on positions of the plurality of regions obtained from the second navigator data, the positions based on the first navigator data, and to generate an image, based on raw data, said magnetic resonance imaging apparatus comprising: a first navigator data processor configured to: generate a phase profile for each of the first navigator data as a first phase profile with respect to each of the first navigator data, wherein the first phase profile plots a phase component of the first navigator data versus a position of the first navigator data in the navigator area; detect a position of each region with respect to each first phase profile based on a position of each region in an intensity profile; generate a position profile plotting a plurality of region positions versus each time at which the first navigator sequence is repeatedly executed; and detect a specific position in the position profile; a second navigator data processor configured to: generate a phase profile for each of the second navigator data as a second phase profile with respect to each of the second navigator data; detect the position of each region with respect to each second phase profile within a reference range set so as to contain the specific position, based on each second phase profile; and acquire the position of each region with respect to each second phase profile as its corresponding position data; and a raw data acquiring unit configured to acquire imaging data as raw data, the imaging data obtained by the imaging sequence corresponding to the second navigator sequence, based on the position data in the second phase profile.