High-Resolution Microwave Breast Imaging Using a 3-D Inverse Scattering Algorithm With a Variable-Strength Spatial Prior Constraint

Neira, Luz Maria; Veen, B.D. Van; Hagness, Susan C.

doi:10.1109/tap.2017.2751668

Cited by 98 publications

(39 citation statements)

References 25 publications

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“…There are several reported methods with which SP can be incorporated into MWI algorithms [4][5][6][7][8][9][10]. These methods have been classified under four categories in Fig-ure 1.…”

Section: Methodsmentioning

confidence: 99%

“…Herein, we consider the first two categories. The first one favours the similarity between complex permittivity within each region of the SP [4][5][6][7]. For this category, we use the so-called MRSP-GNI algorithm [6] which uses an extra layer of SP regularization in conjunction with the multiplicative regularized Gauss-Newton inversion (MR-GNI).…”

Section: Methodsmentioning

confidence: 99%

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On Microwave Breast Imaging with Ultrasound Spatial Priors

Bayat¹,

Mojabi²,

LoVetri³

2020

Preprint

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We investigate the use of ultrasound images as prior structural information (also known as ultrasound spatial priors) to guide microwave breast imaging so as to enhance its achievable complex permittivity images. In the main approach considered herein, the edges within the discretized ultrasound compressibility image are fed as spatial priors into a microwave imaging algorithm. It is shown that this method requires minimal post-processing of the ultrasound image and can enhance the achievable microwave image accuracy. It is also demonstrated that small tumours can still go undetected in microwave breast imaging using this method if their edges are missing from the spatial priors.

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“…There are several reported methods with which SP can be incorporated into MWI algorithms [4][5][6][7][8][9][10]. These methods have been classified under four categories in Fig-ure 1.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

On Microwave Breast Imaging with Ultrasound Spatial Priors

Bayat¹,

Mojabi²,

LoVetri³

2020

Preprint

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show abstract

“…A set of transmitting and receiving antennae, located in the air, scans along the circumference of the breast medium for 31 uniform samples. An excited current is applied at a point source transmitter, namely a short dipole antenna; this antenna model has been experimentally demonstrated as reported in [12]. Frequency-dependent complex permittivities for the breast phantoms were modeled using single-pole Debye models.…”

Section: Evaluation With Numerical Breast Phantomsmentioning

confidence: 99%

Surface Clutter Suppression with FDTD Recovery Signal for Microwave UWB Mammography

Noritake

Kidera

2020

IEICE Trans. Electron.

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Microwave mammography is a promising alternative to X-ray based imaging modalities, because of its small size, low cost, and cell-friendly exposure. More importantly, this modality enables the suppression of surface reflection clutter, which can be enhanced by introducing accurate surface shape estimations. However, near-field measurements can reduce the shape estimation accuracy, due to a mismatch between the reference and observed waveforms. To mitigate this problem, this study incorporates envelope-based shape estimation and finite-difference timedomain (FDTD)-based waveform correction with a fractional derivative adjustment. Numerical simulations based on realistic breast phantoms derived from magnetic resonance imaging (MRI) show that the proposed method significantly enhances the accuracy of breast surface imaging and the performance of surface clutter rejection. key words: microwave ultra wide-band (UWB) mammography, envelope method, FDTD-based waveform correction

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Section: Introductionmentioning

confidence: 99%

“…In this regard, the impulse radar characterized by UWB pulse has widely utilized for near zone sensing applications. The applications in the vicinity of the targets can be included for not only medical applications, such as imaging of the breast tumor, [2][3][4][5] imaging of the bleeding area for stroke, [6][7][8] and assessment of bone mineral density, [9][10][11] but also industrial applications such as ground-penetrating radar (GPR), [12][13][14][15] through-wall penetrating radar, 16,17 and foliage-penetrating radar (FPR). 18,19 For near zone sensing applications, the proposed antenna should radiate a short pulse with less distorted waveform to receive a clear echo pulse reflected by the target.…”

Section: Introductionmentioning

confidence: 99%

Wrapped ultra‐wide band radar sensor based on resistively loaded bow‐tie antenna for near zone sensing applications

Lee

Melek

Shaker

2018

Micro & Optical Tech Letters

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This article presents the pulse radiating and imaging performances of a wrapped resistively loaded bow‐tie antenna (WRLBA) which has a reduced aperture size for utilizing near zone sensing applications. The pulse radiating performances of the WRLBA are investigated and evaluated by comparing to those of the nonloaded wrapped bow‐tie antenna (WBA). The calculated fidelity factor and evaluation factor (EF) of the WRLBA on the boresight direction are 0.97 and 0.07, respectively. The monostatic radar experiment has been shown that two copper targets with a radius of 2 cm are reconstructed at 15 and 20 cm, respectively. Based on the evaluation of the pulse radiating performances and imaging experiment, the proposed WRLBA is a suitable candidate for imaging applications in the vicinity of the targets.

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High-Resolution Microwave Breast Imaging Using a 3-D Inverse Scattering Algorithm With a Variable-Strength Spatial Prior Constraint

Cited by 98 publications

References 25 publications

On Microwave Breast Imaging with Ultrasound Spatial Priors

On Microwave Breast Imaging with Ultrasound Spatial Priors

Surface Clutter Suppression with FDTD Recovery Signal for Microwave UWB Mammography

Wrapped ultra‐wide band radar sensor based on resistively loaded bow‐tie antenna for near zone sensing applications

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