Results 121 to 130 of about 48,172 (166)

Microwave imaging of moving objects

International Journal of Imaging Systems and Technology, 1990
AbstractMicrowave images for objects in motion can be obtained with quality as good as those obtained in the stationary case if the signal waveforms, data acquisition systems, and image reconstruction algorithms are cleverly designed. The principle of imaging for objects in motion is to eliminate the gross Doppler effect of the echo signals and only ...
Hsueh-Jyh Li, Sheng-Hui Yang, Ta-Yung Liu, Shih-Liang Yen, Yuhsyen Shen, Nabil H. Farhat   +5 more
openaire   +1 more source

Machine Learning For Microwave Imaging

2020 14th European Conference on Antennas and Propagation (EuCAP), 2020
This paper proposes a fully-connected artificial neural network (ANN) approach for addressing the full-wave inverse scattering problem in a quantitative fashion. The proposed scheme processes the scattered field samples collected at receivers locations and provides as output an estimate of the unknown complex permittivity in strongly non-linear ...
Ambrosanio M., Franceschini S., Baselice F., Pascazio V.   +3 more
openaire   +1 more source

Imaging Techniques for Microwave Diagnostics

Contributions to Plasma Physics, 2011
AbstractImaging diagnostics, such as Electron Cyclotron Emission Imaging (ECEI) and Microwave Imaging Reflectometry (MIR), exhibit unique characteristics that make them particularly well suited to the validation of theoretical models for plasma instabilities and turbulent fluctuations.
Tobias, B., Donne, A.J. H., Park, H.K., Boom, J.E., Choi, M.J., Classen, I.G.J., Domier, C.W., Kong, X., Lee, W., Liang, T., Luhmann, N.C., Munsat, T., Yu, L., Yun, G.S.   +13 more
openaire   +2 more sources

Nonrandom Microwave Ghost Imaging

IEEE Transactions on Geoscience and Remote Sensing, 2018
Ghost imaging (GI) is a novel imaging method originated from quantum and optical areas. Due to its nonlocal and nonscanning features, the GI has drawn much attention from different research communities and been adopted into microwave imaging scenarios recently.
Xiaopeng Wang, Zihuai Lin
openaire   +1 more source

Breast Phantoms for Microwave Imaging

IEEE Antennas and Wireless Propagation Letters, 2014
Herein, we study the dielectric properties of various mixtures susceptible to be used in manufacturing of reference inhomogeneous breast phantoms dedicated to the experimental validation of microwave breast imaging systems in the 0.5-6-GHz frequency range.
Joachimowicz, Nadine, Conessa, Christophe, Henriksson, Tommy, Duchêne, Bernard   +3 more
openaire   +3 more sources

Microwave tomography for bone imaging

2011 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2011
Osteoporosis is a major health problem affecting roughly 55% of the U.S. population 50 years of age or older. Current methods to detect osteoporosis or assess bone fracture risk involve a bone mineral density (BMD) exam generally using x-ray techniques - primarily dual x-ray absorptiometry (DXA). While this technique provides a measure of the bone mass,
Amir H. Golnabi, Paul M. Meaney, Shireen D. Geimer, Tian Zhou, Keith D. Paulsen   +4 more
openaire   +1 more source

Quantitative microwave imaging with a 2.45-GHz planar microwave camera

IEEE Transactions on Medical Imaging, 1998
This paper presents microwave tomographic reconstructions of the complex permittivity of lossy dielectric objects immersed in water from experimental multiview near-field data obtained with a 2.45-GHz planar active microwave camera. An iterative reconstruction algorithm based on the Levenberg-Marquardt method was used to solve the nonlinear matrix ...
Ann Franchois, Alain Joisel, Christian Pichot, Jean-Charles Bolomey   +3 more
openaire   +2 more sources

Strain Imaging of the Breast by Compression Microwave Imaging

IEEE Antennas and Wireless Propagation Letters, 2010
A method that uses microwave pulses to achieve strain imaging of the breast is presented. In the proposed method, the breast is inserted in an enclosure that defines the boundary conditions for the breast deformation under the influence of external pressure.
Abbosh, A., Crozier, S.
openaire   +4 more sources

Spintronic microwave imaging

Applied Physics A, 2013
By using an on-chip microwave sensor employing spintronic and spin caloritronic principles, a spintronic technique has been developed for microwave imaging. This novel technique allows microwave fields to be directly rectified on chip into dc voltage signals. This imaging technique does not require complicated and expensive microwave systems to operate,
Z. X. Cao, W. Lu, L. Fu, Y. S. Gui, C.-M. Hu   +4 more
openaire   +1 more source

Clinical Imaging of Microwave Mammography

Journal of Visualized Experiments
Breast cancer is the most common malignancy among women, and early detection and treatment are critical for improving clinical outcomes. X-ray mammography remains the standard screening modality; however, it has several limitations, including radiation exposure, patient discomfort, and reduced sensitivity in women with dense breast tissue.
Yoshihiko, Kuwahara, Kimihito, Fujii
openaire   +2 more sources