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

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
ISBN (Print)9781628411751
Publication statusPublished - 2014
Event23rd International Conference on Optical Fibre Sensors - Santander, Spain
Duration: Jun 2 2014Jun 6 2014


Other23rd International Conference on Optical Fibre Sensors


  • Ex-vivo experiment
  • Extrinsic Fabry-Perot interferometry (EFPI)
  • Fabry-Perot
  • Fiber Bragg Grating (FBG)
  • Fiber optic sensor
  • Medical optics instrumentation
  • Pressure measurement
  • Radiofrequency ablation (RFA)

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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