教師資料查詢 | 類別: 期刊論文 | 教師: 黃煌文 Huang-Wen Huang (瀏覽個人網頁)

標題:Illustrating the Impact of Uneven Saline Distribution on Thermal Lesion during Radiofrequency Ablation Using Computer Simulation for Smarter Healthcare Treatment
學年106
學期1
出版(發表)日期2017/12/13
作品名稱Illustrating the Impact of Uneven Saline Distribution on Thermal Lesion during Radiofrequency Ablation Using Computer Simulation for Smarter Healthcare Treatment
作品名稱(其他語言)
著者Huang-Wen Huang, Lin Hui, Jason C. Hung and Kuei Min Wang
單位
出版者
著錄名稱、卷期、頁數Journal of Medical and Biological Engineering
摘要Radiofrequency ablation (RFA) is a technique by which deposition of electromagnetic energy is used to thermally heat tissues. In addition, incomplete treatment with heat-based therapy alone may sometimes occur. It has been used widely in Taiwan for all variety of clinical treating modalities. To improve the efficacy of thermal therapies, many attempts have been used by modifying the tumor’s underlying physiologic characteristics. The objective of this study is to determine whether fluid saline injection during radiofrequency ablation (RFA) can increase the coagulation area and how parameters of both electrical conductivity and blood perfusion rate would impact on thermal lesion formation. Although the heat generated by this high-frequency current arises in all the conducting tissue pathways, high temperature only develops in tissues near the electrode, where the current density is high. Barely any heat arises in tissues further from the electrode because of the fall in current density and the cooling (or radiator) effect of blood flow. Continuous saline infusion is assumed at several locations to investigate the current density and temperature reaction. A simple two dimension (2D) geometry was used to illustrate electrical current pathways and temperature field. Finite-element numerical simulations are performed to solve the Laplace equation of the electric field calculation and Pennes bio-heat transfer equation of calculation temperature field. Results showed that injected saline regions could raise higher temperatures due to increasing electrical conductivity and thus extend the thermal lesion margins. Reversely, the blood perfusion rate which acted as heat sink effect could reduce the maximum temperature at squares.
關鍵字Radiofrequency ablation (RFA);Saline injection;Thermal lesion;Pennes bio-heat transfer;Electrical conductivity
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式,電子版
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