Patent ID: 7332911
Filing Date: 2008-02-19
Classification: G01R

Abstract:
1. A magnetic resonance imaging apparatus for generating an image of a subject based on magnetic resonance signals developed in said subject by emitting RF pulses to said subject in a static magnetic field space, said magnetic resonance imaging apparatus comprising: a scan unit for repeatedly performing an imaging sequence for obtaining said magnetic resonance signals developed in the imaging area of said subject as imaging data, and a navigator sequence for obtaining said magnetic resonance signals developed in the navigator area of said subject as navigator echo data; a body move detector unit for repeatedly detecting the displacement of said navigator area caused by the body move, based on said navigator echo data obtained by said scan unit performing said navigator sequence; a raw data selector unit for selecting said imaging data obtained by said scan unit performing said imaging sequence as raw data based on the displacement of said navigator area caused by the body move detected by said body move detector unit; and an image generator unit for generating the image of said subject based on said imaging data selected as raw data by said raw data selector unit, wherein said scan unit performs said navigator sequence, by emitting first RF pulse having the flip angle of 90 degrees to said subject so as to excite a first area including said navigator area, and then by emitting second RF pulse having the flip angle of 180 degrees so as to excite a second area that is intersecting with said first area in said navigator area.