Pennie & Edmonds LLP
Magnetic resonance imaging apparatus
 An MRI apparatus essentially consisting of a static magnetic field generating system, a gradient magnetic field generating system, a transmission system, a receiving system, a sequencer, a signal processing system and means for displaying the resulting image, wherein the sequencer generates a pulse sequence comprising pulse sequence units each including applying of radio frequency magnetic field pulses for exciting a plurality of slices, the pulses being in a number identical to the number of the slices, applying subsequently sequentially of a plurality of 180.degree. pulses each for simultaneously exciting all of the slices, and acquisition of echo signals for each slice; and the signal processing system arranges the acquired echo signals for a single image on a k-space for each slice in accordance with the phase encoding and performs image reconstruction operation using the signals. The MRI apparatus of the present invention reduces the number of RF pulses applied and enables fast multi-slice imaging. 
Hitachi Medical Corporation
G
G01R
inventional
Shigeru Shinji
Watanabe Kawasaki