On the effect of breast compression and measurement setup configuration in microwave tomography for breast cancer detection

Antennas Wirel. Propag. Lett.

Laurin

2012

In this letter, the effect of breast compression in microwave tomography (MT) for breast cancer detection is analyzed experimentally on a simplified phantom. For this purpose, the same inhomogeneous scatterer has been reconstructed using two phantoms representing two different levels of compression in a camera configuration. The developed phantom, based on some mechanical properties of breast tissues is presented, as well as the measurement procedure. The imaging capabilities of the camera configuration are briefly analyzed in order to quantify the effect of number of transmitters and receivers on the quality of the reconstructed images. Finally, the quality of the measurements and the reconstructed images from the two phantoms are compared in terms of the signal-to-noise ratio (SNR) and the mean square error (MSE), respectively.Index Terms-Breast cancer detection, inverse scattering, microwave tomography (MT), near-field measurements.

Section: Description Of the Developed Phantom And The Measurementmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Experimental Validation of the Effect of Compression on Simplified Phantoms in Microwave Tomography Applied to Breast Cancer Detection

Antennas Wirel. Propag. Lett.

Laurin

2012

“…In both cases, using two different reconstruction algorithms, the N-K and the Contrast Source Inversion (CSI) [12], and synthetic data, reconstructions of simple phantoms with and without compression were obtained. The results show that a compression of the breast could improve the reconstruction process.…”

Section: Numerical Validationmentioning

confidence: 99%

Towards a planar Microwave Tomography system for early stage breast cancer detection

2011 XXXth URSI General Assembly and Scientific Symposium

Henriksson

Barrière

et al. 2011

In this paper, the advantages of planar Microwave Tomography (MT) applied to early stage breast cancer detection are presented. In the proposed planar configuration, the breast is compressed between two dielectric plates in a configuration similar to that of X-ray mammography. This approach would allow the future implementation of a dual modality imaging system where the advantages of both techniques can be exploited. The research efforts made both at DRÉ/L2S (Supelec) and Poly-grames (École Polytechnique de Montréal), for the development of a planar MT system are described, as well as, the key features of the latter. A numerical validation is used to show how the breast compression can lead to an enhancement of the reconstructed images.

“…In such a case, a cylindrical or hemispherical configuration is preferred since the antennas can be conformal with the shape of the breast and can accurately sample the scattered fields. However, compression of the breast may present several advantages over this classical configuration [6,7]. The Tx and Rx antennas can be placed very close to the OUT, allowing the measurement of the evanescent scattered fields.…”

Section: Introductionmentioning

confidence: 99%

Study of Microwave Tomography Measurement Setup Configurations for Breast Cancer Detection Based on Breast Compression

International Journal of Antennas and Propagation

Barrière

Laurin

2013

Microwave tomography (MT) measurement setups for different configurations based on breast compression are compared to classical circular measurement setups. Configurations based on compression allow measuring the evanescent component of the scattered field and lead to a compact measurement setup that allows direct image comparison with a standard mammography system. The different configurations are compared based on the singular value decomposition (SVD) of the radiation operator for a 2D TM case. This analysis allows determining under which conditions the image quality obtained from the reconstructions can be enhanced. These findings are confirmed by a series of reconstructions of breast phantoms based on synthetic data obtained at a single frequency of operation.