Temperature monitoring during thermal ablation on ex-vivo organs by Fiber Bragg gratings

In this paper we report on the application of Fiber Bragg gratings (FBGs) for temperature monitoring during radiofrequency ablation (RFA) for tumor treatment. A proper configuration with several FBG sensors deployed close to the region reached by RF discharges has been developed to monitor the necrotized area. Our ex-vivo experiments on animal kidney and liver confirm that we were able to monitor the temperature with a resolution of 0.1 °C during a series of different and consecutive RF discharges with the laparoscopic bipolar radiofrequency device Habib 4x.