J164034 ラジオ波焼灼療法における熱伝達率の大血管内流量依存性の検討([J164-03]医療・健康・福祉のためのセンシングおよびロボティクス(3))

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  • J164034 Investigation of the Flow Dependence of Heat Transfer Coefficient in Great Vessel for Radio Frequency Ablation

抄録

Radio frequency ablation (RFA) is one of the minimally invasive and useful treatments for liver cancer. While RFA is popular approach for liver cancer in Japan, RFA has several disadvantages such as ablation temperature is excess or insufficient. Because flow in great vessels absorbs the heat from electrode needle in liver RFA, it is difficult for surgeon to estimate the temperature distribution. In this study, we used the experimental system with porcine great vessels and porcine liver to investigate about the relationship between heat loss and flow volume in great vessels. We calculated the heat transfer coefficient based on Newton's law of cooling under each flow volume in each great vessel, and figured out the relationship between heat transfer coefficient and flow volume. As a result, heat transfer coefficient depends on flow volume in great vessels. And the relationship between heat transfer coefficient and flow volume is linearity. These results suggested that the relationship between flow volume in blood vessel and heat transfer coefficient is linearity, and flow volume in blood vessel causes heat loss in RFA.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _J164034-1-_J164034-4, 2013

    一般社団法人 日本機械学会

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