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Instrument having ultra-thin conductive coating and method for magnetic resonance imaging of such instrument

  • US 5,744,958 A
  • Filed: 11/07/1995
  • Issued: 04/28/1998
  • Est. Priority Date: 11/07/1995
  • Status: Expired due to Fees
First Claim
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1. A magnetic resonance imaging system, including:

  • an imaging region and a means for generating a magnetic resonance image of a target object in the imaging region, said magnetic resonance image including an image of the target object, wherein the means for generating the magnetic resonance image includes means for producing an RF field having an RF frequency in the imaging region; and

    an instrument for use with the target object in the imaging region, said instrument including;

    an electrically non-conductive body, sized for use with the target object in the imaging region; and

    an electrically conductive, ultra-thin coating on at least part of the body, the coating being sufficiently thick to cause the instrument to be positively shown in the magnetic resonance image in response to presence of the instrument in the imaging region with the target object during generation of the magnetic resonance image, wherein the coating consists of material having a skin depth with respect to said RF frequency and the coating has a thickness less than the skin depth.

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