Tosi Daniele, Macchi Edoardo Gino, Gallati Mario, Braschi Giovanni, Cigada Alfredo, Rossi Sandro, Leen Gabriel, Lewis Elfed
University of Limerick, Optical Fibre Sensors Research Centre (OFSRC), Limerick, Ireland.
Universita' di Pavia, Dipartimento di Ingegneria Civile ed Architettura, via Ferrata 3, 27100 Pavia (PV), Italy.
Biomed Opt Express. 2014 May 13;5(6):1799-811. doi: 10.1364/BOE.5.001799. eCollection 2014 Jun 1.
A linearly chirped fiber Bragg grating (LCFBG) has been used as a temperature sensor for online monitoring of radiofrequency thermal ablation (RFTA). The LCFBG acts as a distributed sensor, with spatial resolution of 75 μm. A white-light setup that records the LCFBG spectrum estimates the temperature profile in real time. Three RFTA experiments have been performed ex-vivo on porcine liver measuring the radial temperature distribution during the heating process. The analysis of thermal maps quantifies the spatial heat distribution along the measurement axis and determines the ablation efficiency.
线性啁啾光纤布拉格光栅（LCFBG）已被用作温度传感器，用于射频热消融（RFTA）的在线监测。LCFBG作为分布式传感器，空间分辨率为75μm。记录LCFBG光谱的白光装置可实时估计温度分布。已在猪肝脏上进行了三次体外RFTA实验，测量加热过程中的径向温度分布。热图分析量化了沿测量轴的空间热分布，并确定了消融效率。
