Monitoring of radiofrequency thermal ablation in liver tissue through fibre Bragg grating sensors array

• Published in: Electronics letters Vol. 50; no. 14; pp. 981 - 983
• Main Authors: Tosi, D, Macchi, E.G, Braschi, G, Gallati, M, Cigada, A, Poeggel, S, Leen, G, Lewis, E
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 03.07.2014; Institution of Engineering and Technology; John Wiley & Sons, Inc
• Subjects: Ablation; Biological and medical sciences; biological tissues; biomedical equipment; biomedical measurement; Biomedical technology; biothermics; Bragg gratings; Exact sciences and technology; FBG array‐based sensing probe; Fiber optics; Fibre; fibre Bragg grating array‐based sensing probe; fibre optic sensors; Fundamental areas of phenomenology (including applications); Liver; liver tissue; Liver, biliary tract, pancreas, portal circulation, spleen; Medical sciences; Monitoring; optical fibres; Optics; patient monitoring; Physics; porcine liver; quasi‐distributed thermal pattern measurements; Radiofrequency; radiofrequency thermal ablation monitoring; RFTA efficiency; Sensor arrays; Sensors, gyros; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Surgery of the digestive system; temperature measurement; thermal maps; optical fibres; temperature measurement; liver; biomedical equipment; quasi-distributed thermal pattern measurements; biological tissues; porcine liver; liver tissue; patient monitoring; biothermics; radiofrequency thermal ablation monitoring; RFTA efficiency; Bragg gratings; sensor arrays; biomedical measurement; fibre optic sensors; FBG array-based sensing probe; fibre Bragg grating array-based sensing probe; thermal maps; Measurement; Tissue; Liver; Bragg grating; Spacing; Microwave heating; Experimental study; Sensor array; Ablation; Induced hyperthermia; Monitoring; Optical fiber
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2014.0620

A fibre Bragg grating (FBG) array-based sensing probe has been installed on a device for radiofrequency thermal ablation (RFTA). The probe is made of five FBGs with 0.5 cm active area and 1 cm spacing, to provide quasi-distributed thermal pattern measurements. Multiple experiments have been conducted on porcine liver, reporting the temperature pattern along the ablation axis. Thermal maps allow an estimation of the RFTA efficiency and spatial extension in the liver.