Tosi, D,Macchi, EG,Braschi, G,Gallati, M,Cigada, A,Rossi, S,Poeggel, S,Leen, G,Lewis, E,LopezHiguera, JM,Jones, J,LopezAmo, M,Santos, JL

23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS

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

2014

January

Published

1

()

Fiber optic sensor Fabry-Perot Extrinsic Fabry-Perot interferometry (EFPI) Fiber Bragg Grating (FBG) Medical optics instrumentation pressure measurement radiofrequency ablation (RFA) ex-vivo experiment

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 degrees C and 162 kPa have been recorded on the ablation point.

10.1117/12.2058066