Active Microwave Imaging for Breast Cancer Detection

Dyuthi/Manakin Repository

Active Microwave Imaging for Breast Cancer Detection

Show full item record

Title: Active Microwave Imaging for Breast Cancer Detection
Author: Bindu, G; Anil, Lonappan; Vinu, Thomas; Anandan, C K; Mathew, K T
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
Date: 2006


Files in this item

Files Size Format View Description
Dyuthi-P00369.pdf 1.191Mb PDF View/Open PDF

This item appears in the following Collection(s)

Show full item record

Search Dyuthi


Advanced Search

Browse

My Account