Journal article
Computational Validation of a 3-D Microwave Imaging System for Breast-Cancer Screening
The microwave imaging system currently being developed at the Technical University of Denmark is described and its performance tested on simulated data. The system uses an iterative Newton-based imaging algorithm for reconstructing the images in conjunction with an efficient method-of-moments solution of the associated forward scattering problem.
A cylindrical multistatic antenna setup with 32 horizontally oriented antennas is used for collecting the data. It has been found that formulating the imaging algorithm in terms of the logarithm of the amplitude and the unwrapped phase of the measured signals improves its performance when compared to the more commonly used complex phasor formulation.
This improvement is illustrated by imaging a simulated hemispherical breast model using both formulations. In addition to this, the importance of using the correct position and orientation of the antennas in the measurement system is shown by imaging the same breast model using a measurement setup in which the antennas are vertically oriented.
| Language: | English |
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| Publisher: | IEEE |
| Year: | 2009 |
| Pages: | 2105-2115 |
| ISSN: | 15582221 and 0018926x |
| Types: | Journal article |
| DOI: | 10.1109/TAP.2009.2021879 |
| ORCIDs: | Kim, Oleksiy S. |
3-D microwave imaging Antenna measurements Biomedical imaging Breast cancer Computational modeling Image reconstruction Iterative algorithms Iterative methods Microwave imaging Moment methods Position measurement System testing breast cancer cancer electromagnetic scattering inverse problems forward scattering problem hemispherical breast model image reconstruction iterative Newton-based imaging algorithm iterative methods mammography medical image processing method of moments method-of-moments microwave imaging multistatic antenna nonlinear equations phase unwrapping physiological models
