Fiber-optic chirped FBG for distributed thermal monitoring of ex-vivo radiofrequency ablation of liver

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

Research output: Contribution to journalArticlepeer-review

Abstract

A linearly chirped fiber Bragg grating (LCFBG) has been used as a temperature sensor for online monitoring of radiofrequency thermal ablation (RFTA). The LCFBG acts as a distributed sensor, with spatial resolution of 75 μm. A white-light setup that records the LCFBG spectrum estimates the temperature profile in real time. Three RFTA experiments have been performed ex-vivo on porcine liver measuring the radial temperature distribution during the heating process. The analysis of thermal maps quantifies the spatial heat distribution along the measurement axis and determines the ablation efficiency.

Original languageEnglish
Article numberA1799
Pages (from-to)1799-1811
Number of pages13
JournalBiomedical Optics Express
Volume5
Issue number6
DOIs
Publication statusPublished - Jun 1 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Biotechnology

Fingerprint Dive into the research topics of 'Fiber-optic chirped FBG for distributed thermal monitoring of ex-vivo radiofrequency ablation of liver'. Together they form a unique fingerprint.

Cite this