Five-band microwave radiometer system for non-invasive measurement of deep brain temperatures aimed at 1 degree accuracy

2014 Fiscal Year Final Research Report

• Project/Area Number: 23560502
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: Shizuoka University
• Principal Investigator: SUGIURA Toshifumi 静岡大学, 電子工学研究所, 教授 (20135239)
• Co-Investigator(Renkei-kenkyūsha): KIMURA Motohiko 静岡大学, 大学院工学研究科, 教授 (20195382)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 脳低体温療法 / 脳深部温度 / 無侵襲計測 / 新生児 / マイクロ波ラジオメトリ / 5周波マイクロ波ラジオメータ / 温度計測

Outline of Final Research Achievements

Though hypothermic brain treatment for a newborn baby who suffers from hypothetic ischemia is currently attempted in clinical scenes, there is no devices which measure the deep brain temperatures noninvasively, continuously and passively. Medical doctors require a device which measures the temperature at 5 cm depth within 1 ℃ both for accuracy and precision. In this research, a five-band microwave radiometer system for a measurement of deep brain temperatures has been developed. We did all kind of things to remove microbubbles in a circulating cooling water and to stabilize the temperatures of antenna cable and the whole system. Results show that in a phantom experiment, the system can measure the temperature at 5 cm depth from surface with 0.44 ℃ accuracy and 1.3 ℃ precision. Future subject is to use the integrated circuits for the system.

Free Research Field

医用電子工学