Antonelli, Terry, Stout & Kraus, LLP
Magnetic resonance imaging apparatus
 A magnetic resonance imaging apparatus includes a device for executing a pulse sequence which applies a slice direction gradient magnetic field Gz and radio frequency pulses to an object placed inside a static magnetic field, applies further a phase encoding gradient magnetic field Gy and a readout gradient magnetic field Gx to the object in directions orthogonally crossing the slice direction and orthogonally crossing each other, and generates echo signals from the object asymmetrically with respect to a peak point of the echo signals within a sampling time. This pulse sequence execution device executes a first sequence block for serially phase-encoding only predetermined steps of a low encoding region of the gradient magnetic field Gy while the pulse sequence is executed, and serially executes, in succession to the first sequence block, a second sequence block for serially phase-encoding only predetermined steps of the low encoding region of the gradient magnetic field Gx which is replaced while a pulse sequence in which the gradient magnetic fields Gy and Gx are mutually replaced is executed. The magnetic resonance imaging apparatus further includes a device for reconstructing an image of the object by using nuclear magnetic resonance signals obtained by executing the first and second sequence blocks. 
Hitachi, Medical Corporation
G G
G01R G01R
inventional additional
Shigeru
Watanabe