Summary
International Symposium on Antennas and Propagation
2012
Session Number:2E3
Session:
Number:2E3-1
Breast Cancer Localization in Three Dimensions Using Time Reversal DORT Method
Md Delwar Hossain,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Early stage breast cancer detection is a very challenging task, especially in case of younger women owing to the presence of dense glandular tissues in the breast. We investigate the malignant tissue detection inside three dimensional realistic numerical breast phantoms. We employ DORT microwave imaging technique to localize the malignant tissue inside dense breast model. Microwave imaging is based on radar principle where the scattered energy from the target plays the pivotal role to target detection. In a dense breast the malignant tissue in the form of a tumour scatters the incident EM energy along with other dense tissue masses. If the breast is dense enough the reflection from the tumour may be masked by the reflected energy from the dense glandular tissues of the breast. Time reversal is well suited for target localization inside a complex medium with varying amounts of clutter. Hence time reversal based imaging technique can detect tumour even when the dielectric property contrast between healthy and malignant tissue is low. The forward problem has been carried out using FDTD simulations on 3-D breast phantom and the time reversal of the received data was propagated using eigen vectors and Green's function. Our investigation shows tumour can be detected using DORT even when the contrast between healthy and malignant tissue is as low as 18%.