Noninvasive temperature measurement by using electromagnetic waves in a cavity resonator

2016 Fiscal Year Final Research Report

• Project/Area Number: 25350580
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Medical systems
• Research Institution: Hiroshima National College of Maritime Technology
• Principal Investigator: OHWADA Hiroshi 広島商船高等専門学校, 電子制御工学科, 教授 (80350726)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: ハイパーサーミア / 非侵襲測温法 / ＣＴアルゴリズム / FDTD（時間領域差分）法 / 温度変化分布再構成

Outline of Final Research Achievements

The hyperthermia, which heats cancer tissue around 43℃, is an effective therapeutic technique that is used with radiotherapy or with carcinostatic. However, it is necessary to use thermocouple or an optical fiber type thermometer to confirm a heating effect. We have already proposed the noninvasive thermometry method paying attention to the characteristics of the electrical field of the TM mode formed between reentrant electrodes, and the temperature dependence of the dielectrics.
In this paper, to improve positioning accuracy of a reconstructed image of the temperature change inside a target body, the reconstruction parameters were simulated by numerical analysis. As a result, it was shown that the image of the temperature change inside a body is reconstructed more accurate by using the amplitude information instead of the phase information of the electromagnetic field distribution.

Free Research Field

医用生体工学