Fiber-optic combined FPI/FBG sensors for monitoring of radiofrequency thermal ablation of liver tumors

Ex vivo experiments

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

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We present a biocompatible, all-glass, 0.2 mm diameter, fiber-optic probe that combines an extrinsic Fabry-Perot interferometry and a proximal fiber Bragg grating sensor; the probe enables dual pressure and temperature measurement on an active 4 mm length, with 40 Pa and 0.2°C nominal accuracy. The sensing system has been applied to monitor online the radiofrequency thermal ablation of tumors in liver tissue. Preliminary experiments have been performed in a reference chamber with uniform heating; further experiments have been carried out on ex vivo porcine liver, which allowed the measurement of a steep temperature gradient and monitoring of the local pressure increase during the ablation procedure.

Original languageEnglish
Pages (from-to)2136-2144
Number of pages9
JournalApplied Optics
Issue number10
DOIs
Publication statusPublished - Apr 1 2014
Externally publishedYes

Fingerprint

Ablation
liver
Liver
Fiber optics
ablation
Tumors
fiber optics
tumors
Monitoring
probes
sensors
Sensors
Fiber Bragg gratings
pressure measurement
Pressure measurement
Interferometry
Temperature measurement
Thermal gradients
Bragg gratings
temperature measurement

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Fiber-optic combined FPI/FBG sensors for monitoring of radiofrequency thermal ablation of liver tumors : Ex vivo experiments. / Tosi, Daniele; Macchi, Edoardo Gino; Braschi, Giovanni; Cigada, Alfredo; Gallati, Mario; Rossi, Sandro; Poeggel, Sven; Leen, Gabriel; Lewis, Elfed.

In: Applied Optics, No. 10, 01.04.2014, p. 2136-2144.

Research output: Contribution to journalArticle

Tosi, D, Macchi, EG, Braschi, G, Cigada, A, Gallati, M, Rossi, S, Poeggel, S, Leen, G & Lewis, E 2014, 'Fiber-optic combined FPI/FBG sensors for monitoring of radiofrequency thermal ablation of liver tumors: Ex vivo experiments', Applied Optics, no. 10, pp. 2136-2144. https://doi.org/10.1364/AO.53.002136
Tosi, Daniele ; Macchi, Edoardo Gino ; Braschi, Giovanni ; Cigada, Alfredo ; Gallati, Mario ; Rossi, Sandro ; Poeggel, Sven ; Leen, Gabriel ; Lewis, Elfed. / Fiber-optic combined FPI/FBG sensors for monitoring of radiofrequency thermal ablation of liver tumors : Ex vivo experiments. In: Applied Optics. 2014 ; No. 10. pp. 2136-2144.
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