Fiber optic dual EFPI/FBG for radiofrequency ablation monitoring in liver: ex-vivo experiments

Daniele Tosi; Edoardo Gino Macchi; Giovanni Braschi; Mario Gallati; Alfredo Cigada; Sandro Rossi; Sven Poeggel; Gabriel Leen; Elfed Lewis

doi:10.1117/12.2058066

2 June 2014 Fiber optic dual EFPI/FBG for radiofrequency ablation monitoring in liver: ex-vivo experiments

Daniele Tosi, Edoardo Gino Macchi, Giovanni Braschi, Mario Gallati, Alfredo Cigada, Sandro Rossi, Sven Poeggel, Gabriel Leen, Elfed Lewis

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915740 (2014) https://doi.org/10.1117/12.2058066
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We present a miniature and biocompatible fiber-optic sensing system, for specific application in monitoring of the radiofrequency thermal ablation (RFA) process. The sensing system is based on combination of Extrinsic Fabry-Perot Interferometry (EFPI) sensor for pressure detection, and Fiber Bragg Grating (FBG) for temperature measurement. The dual pressure/temperature measurement shows an extremely low cross-sensitivity. Measurements have been performed ex-vivo on porcine liver, recording several RFA procedures in different location. Maximum values of 164°C and 162 kPa have been recorded on the ablation point.

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Daniele Tosi, Edoardo Gino Macchi, Giovanni Braschi, Mario Gallati, Alfredo Cigada, Sandro Rossi, Sven Poeggel, Gabriel Leen, and Elfed Lewis "Fiber optic dual EFPI/FBG for radiofrequency ablation monitoring in liver: ex-vivo experiments", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915740 (2 June 2014); https://doi.org/10.1117/12.2058066

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