Ultra High Frequency and Microwave Non-linear Interaction Device for Cancer Detection and Tissue Characterization
نویسنده
چکیده
The spectrum analysis of interactions between biological tissues and the signals emitted by a specially designed electronic apparatus that incorporates a hybrid-state microwave stimulated emission amplifier-oscillator are described. The biological tissue provides an electromagnetic signature that could be used to investigate cases suspected disease or cancer. This methodology provides a structural characterisation of biologic tissues in support of modern diagnostic imaging techniques. Further to existing literature describing methods for cancer detection by means of electromagnetic field, this technology represents an additional innovation . Interaction of the electromagnetic fields with the living matter In the past century, a great number of researchers have made their contribution to the study of the interactions between biological matter and electromagnetic fields. Many investigated the dielectric properties of living matter. Some analysed the differences between a cancerous agglomerate of cells and homogenous or ‘normal’ tissues. The period between the first and the second world wars spanned the early days of radio and electronics. Vacuum tubes were the radio frequency oscillation generators, the spectrum ranged between few kHz and 15 MHz. Measurements on biological materials were based on resistivity or impedance and instruments such as the Wheatstone bridge. After the second world conflict, investigations on biological materials were extended into the microwave bands. Among the pioneers in this field were H. Fricke and S. Morse. In their 1926 paper entitled ”The electric capacity of tumors of the breast”, they reported that “malignant tumors have a greater polarizability than normal breast tissues or benign tumors”. They carried out their experiments at low frequencies around 20 kHz. Tissues were cut into small blocks and placed in
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تاریخ انتشار 2005