APPARATUS AND METHOD FOR SILENT MAGNETIC RESONANCE IMAGING WITH ROTATING GRADIENT COIL

摘要

The present invention describes a new imaging technique using a mechanically rotating DC gradient coil (112), effectively replacing both the phase encoding and readout gradient pulsings, and reducing the induced noise from these coils. The invention comprises a static magnetic field generator (128) for exciting an inspection object (106) disposed in an inspection space (104) with a magnetic field about the (z-) axis, a magnetic resonance signal measurement device (110) for measuring signals from the inspection object (106), a first gradient magnetic field generator (112) for creating a first (x-) gradient magnetic field in the inspection space (104), wherein the first gradient magnetic field is rotatable about a first (z-) axis, and a second gradient magnetic field generator (130) for creating a second (z-) gradient magnetic field in the inspection space (104), wherein the first (x-) gradient magnetic field and the second (z-) magnetic field are substantially orthogonal.