Abstract
To obtain some prior knowledge of breast cancer detection by microwave imaging, we have measured and analyzed the complex permittivity of tissues extracted from over 140 breast cancer surgeries. The relative permittivity and conductivity of tumor at 1.6 GHz were 17.5% and 16.2% higher than those of mammary gland tissue, respectively. In invasive ductal carcinoma of scirrhous type, 8 out of 64 had higher relative permittivity and conductivity of mammary gland than those of tumor. However, when evaluated by the Debye parameter considering the frequency dependence of the tissue, it is rare that e∞ and Δe of cancer are simultaneously lower than those of mammary gland. The relative permittivity and conductivity of fibroadenoma are almost the same as those of mammary glands. The relative permittivity and conductivity of each tissue showed strong linearity. Microwave imaging requires accurate reconstruction of e∞ and Δe to distinguish cancer from normal tissue.
Highlights
Research on breast cancer detection by microwave imaging has attracted extensive attention [1] [2] [3]
The principle of microwave imaging is the detection of scattered waves generated by the difference in the complex permittivity of tissues in the microwave band [4]
To investigate the pathological type of cancerous tumors considering individual differences, we have measured the complex permittivity of the breast tissue extracted by breast cancer surgery [8]
Summary
Research on breast cancer detection by microwave imaging has attracted extensive attention [1] [2] [3]. The principle of microwave imaging is the detection of scattered waves generated by the difference in the complex permittivity of tissues in the microwave band [4]. Cancer tissues are rich in blood vessels and are reported to have a higher relative permittivity and conductivity than other tissues. [7] shows that the relative permittivity and conductivity of tumors specimen depend on the volume ratio of tumor cells contained. These studies do not mention the pathological findings of cancerous tumors. To investigate the pathological type of cancerous tumors considering individual differences, we have measured the complex permittivity of the breast tissue extracted by breast cancer surgery [8]. We present our measurement and analysis results
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
