In a magnetic resonance imaging apparatus, gradient magnetic fields and a radiofrequency magnetic field are applied to a subject placed in a static magnetic field to excite nucleuses and generate magnetic resonance signals. A magnetic resonance image is reconstructed on the basis of the magnetic resonance...http://www.google.fr/patents/US5867027?utm_source=gb-gplus-shareBrevet US5867027 - Magnetic resonance imaging apparatus
