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Insulated RF shield

  • US 5,159,929 A
  • Filed: 06/14/1990
  • Issued: 11/03/1992
  • Est. Priority Date: 06/14/1990
  • Status: Expired due to Fees
First Claim
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1. A radio frequency shield for use adjacent an extremity of a patient'"'"'s body during a magnetic resonance examination by magnetic resonance examination apparatus, comprising:

  • (A) an electrically conductive layer having a pair of opposed surfaces;

    (B) a pair of electrically insulative layers, one of said insulative layers being disposed adjacent one of said opposed surfaces for positioning intermediate said conductive layer and the patient'"'"'s extremity to insulate the patient'"'"'s extremity from said conductive layer, and the other of said insulative layers being disposed adjacent the other side of said conductive layer and other material to insulate the other material from said conductive layer; and

    (C) an electrically conductive article disposed adjacent said other insulative layer;

    said conductive layer and said pair of insulative layers defining a shielding element essentially enclosing a volume including therein said electrically conductive article;

    said shield defining only a single aperture therethrough and being configured and dimensioned to receive therein through said aperture an extremity of the patient'"'"'s body.

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