Title:
APPARATUS AND METHOD FOR MAGNETIC RESONANCE MEASUREMENT AND MAPPING OF ELECTRICAL IMPEDANCE, COMPLEX PERMITTIVITY AND COMPLEX CONDUCTIVITY AS APPLIED TO DETECTION AND EVALUATION OF SAMPLE PATHOLOGY
Document Type and Number:
WIPO Patent Application WO2004019763
Kind Code:
A3
Abstract:
A method of measurement of or mapping the distribution of complex permittivity, complex conductivity, complex impedance, or electric loss angle during magnetic resonance imaging or analysis. The method includes applying a time-varying electric field of a Faraday shield to a sample and cross-correlating the line spectrum signal so produced with the voltage applied to the Faraday shield in a detection circuit. The method permits non-contrast magnetic resonance screening for breast cancer in vivo and/or continuous measurement of electrical characteristics of materials at variable frequencies in vitro. A system of detecting and evaluating sample pathology includes a Faraday shield device that includes parallel electrodes oriented orthogonal to the static magnetic field of a MRI device to produce a time varying electric field. A detector is coupled to the MRI device to detect at least one of a complex permittivity, a complex conductivity, and an electrical impedance of the sample.
Inventors:
WOLLIN ERNEST (US)
Application Number:
PCT/US2003/027122
Publication Date:
June 03, 2004
Filing Date:
August 29, 2003
Export Citation:
Assignee:
WOLLIN VENTURES INC (US)
WOLLIN ERNEST (US)
WOLLIN ERNEST (US)
International Classes:
A61B5/05; G01R33/28; G01R33/48; G01V3/00; A61B; (IPC1-7): A61B5/05
Foreign References:
| US4608991A | 1986-09-02 |
Other References:
HAYES J C: "ELECTRICAL IMPEDANCE IMAGES FOR BREAST GAIN FDA APPROVAL", DIAGNOSTIC IMAGING, vol. 21, June 1999 (1999-06-01), pages 19 - 20, XP002977027
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