Conference Publication Details
Mandatory Fields
Tosi, D,Poeggel, S,Leen, G,Lewis, E,Macchi, EG,Braschi, G,Gallati, M,Cigada, A,Rossi, S,
Distributed fiber-optic sensors for thermal monitoring in radiofrequency thermal ablation in porcine phantom
Optional Fields
optical fiber sensors distributed sensors temperature measurement radiofrequency thermal ablation (RFTA) ablation of issue THERAPY
In this paper, we report for the first time the application of two distributed fiber-optic sensing systems in medical radiofrequency thermal ablation (RFTA). Measurement systems are based on a distributed temperature sensor based on high-speed detection of Rayleigh signature, and a linearly chirped fiber Bragg grating (LCFBG) sensor that detects temperature distribution on 1.5 cm length. Both technologies are capable of achieving sub-0.1mm spatial resolution. The sensing systems have been applied to monitor the temperature pattern induced by RFTA, measuring temperature gradients in excess of 5 degrees C/mm. All tests have been performed on porcine liver tissue, the phantom of human liver. The results show the premises for the realization of a distributed sensor installed on a RFTA device, capable of real-time prediction and estimation of the ablation effect.
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