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Magnetic resonance imaging apparatus and RF coil employed therein

  • US 5,510,714 A
  • Filed: 08/10/1992
  • Issued: 04/23/1996
  • Est. Priority Date: 08/09/1991
  • Status: Expired due to Fees
First Claim
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1. A magnetic resonance imaging apparatus for irradiating a rotating high-frequency magnetic field on the xy plane which is created by combining linear high-frequency magnetic fields in the x and y directions to an object to be inspected which is placed in a space defined by the x, y, and z coordinate axes crossing at right angles with each other wherein a static magnetic field exists in the z direction, said apparatus comprising:

  • means for generating magnetic resonance signals in the x direction and in the y direction, in combination with a magnetic field generation coil, from said object to be inspected; and

    means for detecting said magnetic resonance signals in the x and y directions;

    said magnetic field generation coil generating a magnetic field for generation of said magnetic resonance signals and comprising a pair of electrically conductive loop elements connected through a plurality of axial electrically conductive segments;

    each of the x and y direction magnetic resonance signals generating means generating respectively a magnetic field strength in the x and y directions in a z direction distribution range, wherein the z direction distribution range of the x direction field strength differs from the z direction distribution of the y direction field strength.

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