Experimental tests were conducted simultaneously using an infrared (IR) camera and a standard camera in the visible range (VR) to detect the ice front propagation as a function of time and space in different sections of pig heart laid on the surface of a cold spherical aluminum source (30 mm in diameter). The goal of the experiments was to simulate the conditions during the medical practice of internal cryotherapy, which aims to eliminate the tissues responsible for atrial fibrillation in the human heart. Freezing temperatures and related times were also measured, although they were affected by several uncertainties associated with the tests, such as air trapping between the metal sphere and flesh, inhomogeneity of the flesh samples, and the low spatial resolution and accuracy of the IR camera. A comparison with the results of previously conducted numerical simulations (Potenza et al., 2023) [1] is also discussed.

Barbero, F., Verona Rinati, G., Bovesecchi, G., Corasaniti, S., Potenza, M., Coppa, P., et al. (2024). Analysis of the ice front propagation in heart tissues: first results. INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 205 [10.1016/j.ijthermalsci.2024.109289].

Analysis of the ice front propagation in heart tissues: first results

Barbero F.;Verona Rinati G.;Bovesecchi G.;Corasaniti S.;Potenza M.;Coppa P.;Pisano C.
2024-01-01

Abstract

Experimental tests were conducted simultaneously using an infrared (IR) camera and a standard camera in the visible range (VR) to detect the ice front propagation as a function of time and space in different sections of pig heart laid on the surface of a cold spherical aluminum source (30 mm in diameter). The goal of the experiments was to simulate the conditions during the medical practice of internal cryotherapy, which aims to eliminate the tissues responsible for atrial fibrillation in the human heart. Freezing temperatures and related times were also measured, although they were affected by several uncertainties associated with the tests, such as air trapping between the metal sphere and flesh, inhomogeneity of the flesh samples, and the low spatial resolution and accuracy of the IR camera. A comparison with the results of previously conducted numerical simulations (Potenza et al., 2023) [1] is also discussed.
2024
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-IND/10
Settore IIND-07/A - Fisica tecnica industriale
English
Cryo-ablation; Cryoballoon; Heat transfer; Ice front; Finite differences; Atrial fibrillation
Barbero, F., Verona Rinati, G., Bovesecchi, G., Corasaniti, S., Potenza, M., Coppa, P., et al. (2024). Analysis of the ice front propagation in heart tissues: first results. INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 205 [10.1016/j.ijthermalsci.2024.109289].
Barbero, F; Verona Rinati, G; Bovesecchi, G; Corasaniti, S; Potenza, M; Coppa, P; Pisano, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/396883
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