WO2006086529A3 - Time domain inverse scattering techniques for use in microwave imaging - Google Patents

Time domain inverse scattering techniques for use in microwave imaging Download PDF

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Publication number
WO2006086529A3
WO2006086529A3 PCT/US2006/004533 US2006004533W WO2006086529A3 WO 2006086529 A3 WO2006086529 A3 WO 2006086529A3 US 2006004533 W US2006004533 W US 2006004533W WO 2006086529 A3 WO2006086529 A3 WO 2006086529A3
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WIPO (PCT)
Prior art keywords
average
inverse scattering
properties
domain inverse
time domain
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PCT/US2006/004533
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French (fr)
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WO2006086529A2 (en
Inventor
David W Winters
Veen Barry D Van
Susan C Hagness
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Wisconsin Alumni Res Found
David W Winters
Veen Barry D Van
Susan C Hagness
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Application filed by Wisconsin Alumni Res Found, David W Winters, Veen Barry D Van, Susan C Hagness filed Critical Wisconsin Alumni Res Found
Priority to EP06734641A priority Critical patent/EP1845847A4/en
Publication of WO2006086529A2 publication Critical patent/WO2006086529A2/en
Publication of WO2006086529A3 publication Critical patent/WO2006086529A3/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 

Abstract

A system and a method are provided for estimating the average dielectric properties of a plurality of regions in space. The application of this technique is illustrated for determining the average properties of breast tissue. The knowledge of average properties is important when UWB microwave radar signal processing algorithms are used for tumor detection and localization. The method is an extension of a time-domain inverse scattering algorithm based on the finite-difference time-domain method. A hybrid conjugate gradient optimization is used to minimize a cost function defined between a measured and a calculated total electromagnetic field at a series of antennas. The output of the method is an average set of electromagnetic material parameters that describe specific regions of interest in either a non-dispersive heterogeneous medium or a dispersive heterogeneous medium.
PCT/US2006/004533 2005-02-11 2006-02-08 Time domain inverse scattering techniques for use in microwave imaging WO2006086529A2 (en)

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EP06734641A EP1845847A4 (en) 2005-02-11 2006-02-08 Time domain inverse scattering techniques for use in microwave imaging

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US11/056,342 US7809427B2 (en) 2005-02-11 2005-02-11 Time domain inverse scattering techniques for use in microwave imaging
US11/056,342 2005-02-11

Publications (2)

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WO2006086529A2 WO2006086529A2 (en) 2006-08-17
WO2006086529A3 true WO2006086529A3 (en) 2007-03-08

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US (1) US7809427B2 (en)
EP (1) EP1845847A4 (en)
WO (1) WO2006086529A2 (en)

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US20060241409A1 (en) 2006-10-26
US7809427B2 (en) 2010-10-05
EP1845847A2 (en) 2007-10-24
EP1845847A4 (en) 2009-07-08
WO2006086529A2 (en) 2006-08-17

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