Localized temperature measurements while using a radio frequency total occlusion ablation system in a porcine model

John M. Neet; Marlin R. Siglinger R.N.; Gail Palmer

doi:10.1117/12.476273

12 September 2003 Localized temperature measurements while using a radio frequency total occlusion ablation system in a porcine model

John M. Neet, Marlin R. Siglinger R.N., Gail Palmer

Author Affiliations +

Proceedings Volume 4949, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIII; (2003) https://doi.org/10.1117/12.476273
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

A RF ablation guide wire with an optical coherence reflectometry guidance system has been developed to percutaneously open total occlusions in arteries. The ablation energy does generate heat as does any electrosurgical application of RF energy. Prior histology studies using this device had shown that the heat generated in the total occlusion was not a clinical concern. In this study, a novel fiber-optic based temperature measurement sensor was used to actually measure the temperature rise in an artery in vivo in a porcine model. The optical temperature measurement system is immune to RF emissions and interference and could be delivered in the same catheter as the guide wire. Temperature rises in the occluded arteries in a worst-case scenario were shown to be less than 10°C, localized to the volume adjacent to the ablation tip, and the temperature returned to ambient within a few seconds after the energy was no longer applied. The temperature data is in agreement with the prior histology studies.

Citation Download Citation

John M. Neet, Marlin R. Siglinger R.N., and Gail Palmer "Localized temperature measurements while using a radio frequency total occlusion ablation system in a porcine model", Proc. SPIE 4949, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIII, (12 September 2003); https://doi.org/10.1117/12.476273

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