K.N. Modha, G. Dimitrakis, B. Hayes-Gill, and I. Harrison (UK)
UWB, UWB radar, breast cancer imaging
The problems associated with current breast imaging tech niques such as X-ray mammography, ultrasound and mag netic resonance imaging (MRI) have motivated the devel opment of an Ultra-Wideband (UWB) breast cancer detec tion method. This alternative method detects the dielectric contrast between normal and malignant breast tissues. A laboratory breast ‘phantom’ containing the normal and ma lignant breast tissue representatives has been produced. An Ice Cream Cone Antenna (ICCA) has been optimised for operation in a soya oil coupling medium in order to cou ple the maximum energy into the breast model. An ICCA pair printed on the same substrate has been used to scan the breast ‘phantom’. Full two-port scattering parameters were measured during the scanning process and were trans formed into time- domain pulses. An image showing the position of the tumour model, based on the power trans ferred between the antennas, has been constructed. The proposed method could be applied to a cylindrical based measurement system where patient breasts are pendant in a cavity that contains the coupling medium and the antenna array.
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