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Impedance measurements of bodily matter

  • US 6,690,181 B1
  • Filed: 08/16/2001
  • Issued: 02/10/2004
  • Est. Priority Date: 01/05/1999
  • Status: Expired due to Fees
First Claim
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1. A method for generating an impedance spectrum which is characteristic of a sample of human or non-human bodily matter, said method comprising the steps of:

  • applying a first electrical signal to a first sample of bodily matter at each of a plurality of frequencies in a first frequency range including a resonant frequency;

    measuring an impedance quantity at each of the plurality of frequencies in the first frequency range whereby to generate an impedance spectrum of the first sample;

    applying a second electrical signal to a second sample of bodily matter at each of a plurality of frequencies in a second frequency range including a resonant frequency;

    measuring an impedance quantity at each of the plurality of frequencies in the second frequency range whereby to generate an impedance spectrum of the second sample;

    comparing the impedance spectrum of the first sample and the impedance spectrum of the second sample; and

    deducing the relative characteristics of the first and second sample of bodily matter.

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