Ultrawideband temperature-dependent dielectric properties of animal liver tissue in the microwave frequency range
| Autor: | Mariya Lazebnik, M.C. Converse, Susan C. Hagness, John H. Booske |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Microwave frequency range
Polynomial Materials science Radiological and Ultrasound Technology Swine business.industry Quantitative Biology::Tissues and Organs Physics::Medical Physics Electric Conductivity Temperature Dielectric Models Biological Optics Liver Electrical resistivity and conductivity Liver tissue Animals Optoelectronics Cattle Radiology Nuclear Medicine and imaging Microwaves business Microwave |
| Zdroj: | Physics in Medicine and Biology. 51:1941-1955 |
| ISSN: | 1361-6560 0031-9155 |
| Popis: | The development of ultrawideband (UWB) microwave diagnostic and therapeutic technologies, such as UWB microwave breast cancer detection and hyperthermia treatment, is facilitated by accurate knowledge of the temperature- and frequency-dependent dielectric properties of biological tissues. To this end, we characterize the temperature-dependent dielectric properties of a representative tissue type-animal liver-from 0.5 to 20 GHz. Since discrete-frequency linear temperature coefficients are impractical and inappropriate for applications spanning wide frequency and temperature ranges, we propose a novel and compact data representation technique. A single-pole Cole-Cole model is used to fit the dielectric properties data as a function of frequency, and a second-order polynomial is used to fit the Cole-Cole parameters as a function of temperature. This approach permits rapid estimation of tissue dielectric properties at any temperature and frequency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|