Fiber-Optic Distributed Sensing Network for Thermal Mapping of Gold Nanoparticles-Mediated Radiofrequency Ablation
Sametova A. Kurmashev S. Ashikbayeva Z. Amantayeva A. Blanc W. Atabaev T.Sh. Tosi D.
May 2022MDPI
Biosensors
2022#12Issue 5
In this work, we report the design of an optical fiber distributed sensing network for the 2-dimensional (2D) in situ thermal mapping of advanced methods for radiofrequency thermal ablation. The sensing system is based on six high-scattering MgO-doped optical fibers, interleaved by a scattering-level spatial multiplexing approach that allows simultaneous detection of each fiber location, in a 40 × 20 mm grid (7.8 mm2 pixel size). Radiofrequency ablation (RFA) was performed on bovine phantom, using a pristine approach and methods mediated by agarose and gold nanoparticles in order to enhance the ablation properties. The 2D sensors allow the detection of spatiotemporal patterns, evaluating the heating properties and investigating the repeatability. We observe that agarose-based ablation yields the widest ablated area in the best-case scenario, while gold nanoparticles-mediated ablation provides the best trade-off between the ablated area (53.0–65.1 mm2, 61.5 mm2 mean value) and repeatability.
biomedical sensors , distributed sensors , fiber-optic shape sensors , gold nanoparticles , optical fiber sensor , radiofrequency ablation
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School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Université Côte d’Azur, INPHYNI, CNRS UMR7010, Avenue Joseph Vallot, Nice, 06108, France
Department of Chemistry, Nazarbayev University, 53 Kabanbay Batyr Avenue,, Nur-Sultan, 010000, Kazakhstan
National Laboratory Astana, Laboratory of Biosensors and Bioinstruments, Nur-Sultan, 010000, Kazakhstan
School of Engineering and Digital Sciences
Université Côte d’Azur
Department of Chemistry
National Laboratory Astana
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