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Magnetic resonance imaging assisted cryosurgery

  • US 5,433,717 A
  • Filed: 03/23/1993
  • Issued: 07/18/1995
  • Est. Priority Date: 03/23/1993
  • Status: Expired due to Term
First Claim
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1. An apparatus for high-resolution magnetic resonance monitoring of cryosurgery in a subject tissue, comprising:

  • a magnet producing a magnetic field to which said subject tissue is exposed;

    a cryoprobe located in said magnetic field and having an intracorporeal end, an exterior surface, a cavity, an inlet for introduction of a cryogen to said cavity, an outlet for exhaust of said cryogen from said cavity, and a thermally conducting region between said cavity and an active region on a portion of said exterior surface for application to said subject tissue; and

    a magnetic resonance radio frequency coil mounted on said cryoprobe within a distance less than several times a diameter of said coil from said active region for providing a magnetic resonance image of said subject tissue.

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