Journal
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
Volume 54, Issue 11, Pages 2000-2010Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TBME.2007.895108
Keywords
breast cancer detection; finite-difference time-domain (FDTD) methods; multifrequency adaptive and robust technology (MART); robust capon beamforming (RCB); thermal acoustic imaging (TAI)
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Funding
- NCI NIH HHS [1R41CA107903-1] Funding Source: Medline
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Microwave-induced thermal acoustic imaging (TAI) is a promising early breast cancer detection technique, which combines the advantages of microwave stimulation and ultrasound imaging and offers a high imaging contrast, as well as high spatial resolution at the same time. A new multifrequency microwave-induced thermal acoustic imaging scheme for early breast cancer detection is proposed in this paper. Significantly more information about the human breast can be gathered using multiple frequency microwave stimulation. A multifrequency adaptive and robust technique (MART) is presented for image formation. Due to its data-adaptive nature, MART can achieve better resolution and better interference rejection capability than its data -independent counterparts, such as the delay-and-sum method. The effectiveness of this procedure is shown by several numerical examples based on 2-D breast models. The finite-difference time-domain method is used to simulate the electromagnetic field distribution, the absorbed microwave energy density, and the thermal acoustic field in the breast model.
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