Method for measuring temperature within living body

Abstract

Abstract PURPOSE:To implement a highly sensitive, highly accurate measurement of temperature of a living body, by providing a static magnetic wave resonator at an antenna part comprising a waveguide, when the intensity of heat radiation in a microwave band emitted from the inside of a living body is measured at the outside of the body. CONSTITUTION:Thermal noise power from a reference load 13 and thermal noise power from a human body 1 which is received through a probe antenna 18 are alternately switched with a switch 4. The high frequency is amplified. The intermediate frequency is amplified. Thereafter, microwave detection is performed. Simultaneous detection is performed in a lock-in amplifier. The results are compared and measured. At this time, a static magnetic wave resonator 3 is provided at the antenna 18. The signal from the antenna 18 is guided to a receiver inputted into a coaxial cable 16 through the directly coupled resonator 3 and guided to a receiver. Then, only the frequency corresponding to temperature is picked up. Therefore, resolution in temperature is improved. Thus, the highly sensitive, highly accurate measurement of the temperature in the body can be implemented.

Inventors

• 👤 Yukio Ito
• 👤 由喜男 伊藤
• 👤 Hiroyuki Takeuchi
• 👤 裕之 竹内

Bibliographic Details