Microwave Diffraction Tomography for Biomedical Applications

Bolomey, Jean-Charles; Izadnegahdar, A.; Jofre, L.; Pichot, Ch.; Peronnet, G.; Solaimani, M.

doi:10.1109/tmtt.1982.1131357

Cited by 126 publications

(42 citation statements)

References 8 publications

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“…With respect to radar technology, the most advanced concepts appear to be ultra-wideband microwave imaging via space-time beamforming [Xu et al 2005;Davis et al 2005], confocal microwave imaging [Fear et al 2002;Yun et al 2005] and near field synthetic focusing [Benjamin et al 2001]. Studies of microwave tomography also exist and include reports by Bolomey et al [1982Bolomey et al [ , 1983Bolomey et al [ , 1985, Liewei et al [2002], Souvorov et al [2000], Bulyshev et al [2001], Meaney et al [2000Meaney et al [ , 2003, Ciocan et al [2004], among others. Most of these efforts (either radar or tomography) are occurring at the prototyping stage where the goal has been to identify and optimize the important design considerations rather than report on the electrical characteristics of breast tissue per se.…”

Section: Introductionmentioning

confidence: 99%

Initial Clinical Experience with Microwave Breast Imaging in Women with Normal Mammography

et al. 2007

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We have developed a microwave tomography system for experimental breast imaging. In this paper we illustrate a strategy for optimizing the coupling liquid for the antenna array based on in vivo measurement data. We present representative phantom experiments to illustrate the imaging system's ability to recover accurate property distributions over the range of dielectric properties expected to be encountered clinically. To demonstrate clinical feasibility and assess the microwave properties of the normal breast in vivo, we summarize our initial experience with microwave breast exams of 43 women categorized as BIRADS 1. The clinical results show a high degree of bilateral symmetry in the whole breast average microwave properties. Focal assessments of microwave properties are associated with breast tissue composition evaluated through radiographic density categorization verified through MR image correlation in selected cases. Specifically, both whole breast average and local microwave properties increase with increasing radiographic density where the latter exhibits a more substantial rise. These findings support our hypothesis that water content variations in the breast play an influential role in dictating the overall dielectric property distributions and indicate that the microwave properties in the breast are more heterogeneous than previously believed based on ex vivo property measurements reported in the literature.

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Section: Introductionmentioning

confidence: 99%

Initial Clinical Experience with Microwave Breast Imaging in Women with Normal Mammography

et al. 2007

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“…In recent years, microwave breast tumor detection is growing as a promising technique [1][2][3][4][5][6][7][8][9][10], since it is a non-invasive technique that uses non-ionizing radiation. It is considered a potential alternative or complement to X-rays [1,2], which is the basic technique used in breast cancer detection today.…”

Section: Introductionmentioning

confidence: 99%

“…Current research focuses on two categories, microwave tomography [6][7][8] and ultra-wideband (UWB) radar-based approach [1][2][3][4][5]. In the latter, several techniques have recently been developed -Concepts and circuits based on UWB pulses, especially for communication systems [11], which have also proved interesting for tomography applications.…”

Section: Introductionmentioning

confidence: 99%

Weighted Centroid Method for Breast Tumor Localization Using an Uwb Radar

Lázaro¹,

Girbau²,

Villarino³

2010

PIER B

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Abstract-This paper studies the potential of ultra-wideband (UWB) microwave imaging for detection and localization of breast cancer in its early stages. A method is proposed for locating tumors which is based on the time-of-flight of the signal backscattered at the tumor. Timeof-flight is detected using a wavelet transform algorithm. The main contribution of this paper is that it proposes to determine the position of the tumor by using an adapted version of the centroid localization method used in wireless sensor nodes. Its main advantage is that it does not require knowing a priori neither the propagation velocity of the breast nor its dielectric permittivity. The feasibility of the method has been investigated by means of simulated and experimental results with an ultra-wideband radar and a phantom.

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“…Microwave imaging is a technique aimed at investigating and reconstructing the electromagnetic properties of an inaccessible area (for a general overview see [1][2][3] and the reference therein). Towards this aim, the investigation domain is probed by means of a set of incident electromagnetic fields and the scattering interactions with the structure under test are detected through a set of sensors placed outside the inaccessible area.…”

Section: Introductionmentioning

confidence: 99%

An Innovative Fuzzy-Logic-Based Strategy for an Effective Exploitation of Noisy Inverse Scattering Data

Azaro¹,

Casagranda²,

Franceschini³

et al. 2005

PIER

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Abstract-This paper presents an innovative inverse scattering approach based on a fuzzy-logic strategy aimed at fully exploiting the information content of the scattered data in a microwave imaging system. The effectiveness of the proposed method is assessed through the results of a numerical analysis concerned with the reconstruction of single as well as multiple dielectric targets in various noisy environments. For comparison purposes, the obtained performance are compared with those of a standard method in terms of reconstruction accuracy and computational load to point out the improvement induced by the proposed approach.

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Microwave Diffraction Tomography for Biomedical Applications

Abstract: -This short paper points out the realizability of a method suitable for quasi reaf-time coherent microwave tomography for biomedical applications.I.

Cited by 126 publications

References 8 publications

Initial Clinical Experience with Microwave Breast Imaging in Women with Normal Mammography

Initial Clinical Experience with Microwave Breast Imaging in Women with Normal Mammography

Weighted Centroid Method for Breast Tumor Localization Using an Uwb Radar

An Innovative Fuzzy-Logic-Based Strategy for an Effective Exploitation of Noisy Inverse Scattering Data

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