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Medical broad band electromagnetic holographic imaging

  • US 6,876,878 B2
  • Filed: 06/06/2001
  • Issued: 04/05/2005
  • Est. Priority Date: 06/26/1996
  • Status: Expired due to Term
First Claim
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1. A method for imaging an anomalous region located within a nontransparent medium of an organism, said method comprising the steps of:

  • a. placing one or more electromagnetic transmitters in transmission contact with said medium;

    b. placing one or more electromagnetic receivers at receiving positions with respect to said medium;

    c. operating said transmitters to generate a broad band electromagnetic field, comprising a frequency domain and/or time domain electromagnetic field, whereby said generated electromagnetic field propagates through said medium to interact with said anomalous region, resulting in a scattered electromagnetic field;

    d. measuring said scattered electromagnetic field with said receivers;

    e. obtaining a background field {Eb, Hb} representative of a background medium equivalent to said medium without the presence of said anomalous region;

    f. obtaining a backscattering anomalous field {Eas, Has} equivalent to that obtainable by illuminating said background medium with said scattered electromagnetic field transmitted from the receiving positions of said receivers; and

    g. producing a broad band holographic image of said anomalous region by calculating cross power spectra of said background and said backscattering fields, or calculating cross correlation functions between said background and said backscattering fields.

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