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Proceedings Paper

Real-time temperature monitoring during radiofrequency treatments on ex-vivo animal model by fiber Bragg grating sensors
Author(s): Giovanna Palumbo; Daniele Tosi; Emiliano Schena; Carlo Massaroni; Juliet Ippolito; Paolo Verze; Nicola Carlomagno; Vincenzo Tammaro; Agostino Iadicicco; Stefania Campopiano
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Paper Abstract

Fiber Bragg Grating (FBG) sensors applied to bio-medical procedures such as surgery and rehabilitation are a valid alternative to traditional sensing techniques due to their unique characteristics. Herein we propose the use of FBG sensor arrays for accurate real-time temperature measurements during multi-step RadioFrequency Ablation (RFA) based thermal tumor treatment. Real-time temperature monitoring in the RF-applied region represents a valid feedback for the success of the thermo-ablation procedure.

In order to create a thermal multi-point map around the tumor area to be treated, a proper sensing configuration was developed. In particular, the RF probe of a commercial medical instrumentation, has been equipped with properly packaged FBGs sensors. Moreover, in order to discriminate the treatment areas to be ablated as precisely as possible, a second array 3.5 cm long, made by several FBGs was used.

The results of the temperature measurements during the RFA experiments conducted on ex-vivo animal liver and kidney tissues are presented herein. The proposed FBGs based solution has proven to be capable of distinguish different and consecutive discharges and for each of them, to measure the temperature profile with a resolution of 0.1 °C and a minimum spatial resolution of 5mm. Based upon our experiments, it is possible to confirm that the temperature decreases with distance from a RF peak ablation, in accordance with RF theory. The proposed solution promises to be very useful for the surgeon because a real-time temperature feedback allows for the adaptation of RFA parameters during surgery and better delineates the area under treatment.

Paper Details

Date Published: 16 May 2017
PDF: 8 pages
Proc. SPIE 10231, Optical Sensors 2017, 102312K (16 May 2017); doi: 10.1117/12.2267227
Show Author Affiliations
Giovanna Palumbo, Univ. degli Studi di Napoli Parthenope (Italy)
Daniele Tosi, Nazarbayev Univ. (Kazakhstan)
Emiliano Schena, Univ. Campus Bio-Medico di Roma (Italy)
Carlo Massaroni, Univ. Campus Bio-Medico di Roma (Italy)
Juliet Ippolito, Univ. degli Studi di Napoli Federico II (Italy)
Paolo Verze, Univ. degli Studi di Napoli Federico II (Italy)
Nicola Carlomagno, Univ. degli Studi di Napoli Federico II (Italy)
Vincenzo Tammaro, Univ. degli Studi di Napoli Federico II (Italy)
Agostino Iadicicco, Univ. degli Studi di Napoli Parthenope (Italy)
Stefania Campopiano, Univ. degli Studi di Napoli Parthenope (Italy)

Published in SPIE Proceedings Vol. 10231:
Optical Sensors 2017
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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