Multifrequency microwave-induced thermal acoustic imaging for breast cancer detection.
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.
Guo
Bin
B
Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611, USA. guobin@dsp.ufl.edu
Li
Jian
J
Zmuda
Henry
H
Sheplak
Mark
M
D000162:Acoustics; D001940:Breast / Q000503:physiopathology; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000503:physiopathology*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008872:Microwaves; D008954:Models, Biological; D013817:Thermography / Q000379:methods*