Wook Jae YOO, Dong Hyun CHO, Kyoung Won JANG, Sang Hun SHIN, Jeong Ki SEO, Soon-Cheol CHUNG, Bongsoo LEE^*, Byung Gi PARK¹, Joo Hyun MOON², Young-Ho CHO³, and Sin KIM⁴

School of Biomedical Engineering, College of Biomedical and Health Science, Research Institute of Biomedical Engineering, Konkuk University, Chungju 380-701, Korea
¹Department of Energy and Environment Engineering, Soonchunhyang University, Asan 336-745, Korea
²Department of Energy and Environment System Engineering, Dongguk University, Gyeongju 780-714, Korea
³Department of Radiological Science, Catholic University of Daegu, Gyeongsan 712-702, Korea
⁴Department of Nuclear and Energy Engineering, Applied Radiological Science Research Institute, Cheju National University, Jeju 690-756, Korea

(Received July 14, 2008; Revised February 26, 2009; Accepted March 4, 2009)

In this study, we have fabricated non-contact temperature sensor using an infrared optical fiber for measuring temperature distributions during radiofrequency ablation. We have measured an infrared radiation, which is transferred by a silver halide optical fiber from the multi-points on the water around inserted electrode, using a thermopile sensor and the output voltages of a thermopile sensor are compared with those of the thermocouple recorder. Also, the relationship between the temperatures and the output voltages of a thermopile sensor at the measuring points is determined to obtain the temperature distribution. The measurable temperature range of a fiber-optic non-contact temperature sensor is from 37 to 80 °C.

Key words: fiber-optic sensor, infrared radiation, noncontact temperature sensor, radiofrequency ablation, silver halide optical fiber

^*E-mail address: bslee@kku.ac.kr