Distributed fiber-optic sensors for thermal monitoring in radiofrequency thermal ablation in porcine phantom

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

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

2 Citations (Scopus)


In this paper, we report for the first time the application of two distributed fiber-optic sensing systems in medical radiofrequency thermal ablation (RFTA). Measurement systems are based on a distributed temperature sensor based on high-speed detection of Rayleigh signature, and a linearly chirped fiber Bragg grating (LCFBG) sensor that detects temperature distribution on 1.5 cm length. Both technologies are capable of achieving sub-0.1mm spatial resolution. The sensing systems have been applied to monitor the temperature pattern induced by RFTA, measuring temperature gradients in excess of 5°C/mm. All tests have been performed on porcine liver tissue, the phantom of human liver. The results show the premises for the realization of a distributed sensor installed on a RFTA device, capable of real-time prediction and estimation of the ablation effect.

Original languageEnglish
Title of host publicationProceedings of IEEE Sensors
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
Publication statusPublished - Dec 12 2014
Externally publishedYes
Event13th IEEE SENSORS Conference, SENSORS 2014 - Valencia, Spain
Duration: Nov 2 2014Nov 5 2014


Other13th IEEE SENSORS Conference, SENSORS 2014


  • Ablation of issue
  • Distributed sensors
  • Optical fiber sensors
  • Radiofrequency thermal ablation (RFTA)
  • Temperature measurement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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