Dynamic temperature monitoring and control with fully distributed fiber Bragg grating sensor

Yuetong Ding; Na Chen; Zhenyi Chen; Fufei Pang; Xianglong Zeng; Tingyun Wang

doi:10.1117/12.869931

8 November 2010 Dynamic temperature monitoring and control with fully distributed fiber Bragg grating sensor

Yuetong Ding, Na Chen, Zhenyi Chen, Fufei Pang, Xianglong Zeng, Tingyun Wang

Proceedings Volume 7845, Optics in Health Care and Biomedical Optics IV; 784509 (2010) https://doi.org/10.1117/12.869931
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

In this paper, fiber Bragg grating (FBG) is used as a fully distributed sensor to monitor tissue dynamic temperature changes during laser-induced interstitial thermotherapy (LITT). This work is mainly realized by the correlative single particle (CSP) algorithm, which is a rapid algorithm for spectrum reconstruction. Experimental LITT treatment was set up by using 532nm laser applicator on a piece of fresh liver tissue. In the experiments, the dynamic temperature profile was successfully demodulated with a refreshing speed of 11 seconds. With the aid of dynamic feedback, the thermotherapy boundary temperature was well controlled around 35°C during the treatment by adjusting the laser output power in real-time. Therefore, with this method, it is promising to precisely control the tissue temperature in vivo and improve the safety of the LITT remarkably.

Citation Download Citation

Yuetong Ding, Na Chen, Zhenyi Chen, Fufei Pang, Xianglong Zeng, and Tingyun Wang "Dynamic temperature monitoring and control with fully distributed fiber Bragg grating sensor", Proc. SPIE 7845, Optics in Health Care and Biomedical Optics IV, 784509 (8 November 2010); https://doi.org/10.1117/12.869931

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