alexa Confocal microwave imaging for breast cancer detection: delay-multiply-and-sum image reconstruction algorithm.
Geology & Earth Science

Geology & Earth Science

Journal of Remote Sensing & GIS

Author(s): Lim HB, Nhung NT, Li EP, Thang ND

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Abstract A new image reconstruction algorithm, termed as delay-multiply-and-sum (DMAS), for breast cancer detection using an ultra-wideband confocal microwave imaging technique is proposed. In DMAS algorithm, the backscattered signals received from numerical breast phantoms simulated using the finite-difference time-domain method are time shifted, multiplied in pair, and the products are summed to form a synthetic focal point. The effectiveness of the DMAS algorithm is shown by applying it to backscattered signals received from a variety of numerical breast phantoms. The reconstructed images illustrate improvement in identification of embedded malignant tumors over the delay-and-sum algorithm. Successful detection and localization of tumors as small as 2 mm in diameter are also demonstrated.
This article was published in IEEE Trans Biomed Eng and referenced in Journal of Remote Sensing & GIS

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