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Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/2735

Title: Active Microwave Imaging for Breast Cancer Detection
Authors: Bindu, G
Anil, Lonappan
Vinu, Thomas
Aanandan,C K
Mathew, K T
Keywords: Microwave Imaging
Breast Cancer
Breast tumor
Issue Date: 2006
Publisher: Progress In Electromagnetics Research
Abstract: Active microwave imaging is explored as an imaging modality for early detection of breast cancer. When exposed to microwaves, breast tumor exhibits electrical properties that are significantly different from that of healthy breast tissues. The two approaches of active microwave imaging — confocal microwave technique with measured reflected signals and microwave tomographic imaging with measured scattered signals are addressed here. Normal and malignant breast tissue samples of same person are subjected to study within 30 minutes of mastectomy. Corn syrup is used as coupling medium, as its dielectric parameters show good match with that of the normal breast tissue samples. As bandwidth of the transmitter is an important aspect in the time domain confocal microwave imaging approach, wideband bowtie antenna having 2:1 VSWR bandwidth of 46% is designed for the transmission and reception of microwave signals. Same antenna is used for microwave tomographic imaging too at the frequency of 3000 MHz. Experimentally obtained time domain results are substantiated by finite difference time domain (FDTD) analysis. 2-D tomographic images are reconstructed with the collected scattered data using distorted Born iterative method. Variations of dielectric permittivity in breast samples are distinguishable from the obtained permittivity profiles.
URI: http://dyuthi.cusat.ac.in/purl/2735
Appears in Collections:Dr. C K Aanandan

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