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:Confluent Thermal Lesion Formation in Liver with Radio Frequency Ablation by Using Internally Cooled Multiple-Electrode Technique: Computational Results
學年104
學期1
出版(發表)日期2015/09/01
作品名稱Confluent Thermal Lesion Formation in Liver with Radio Frequency Ablation by Using Internally Cooled Multiple-Electrode Technique: Computational Results
作品名稱(其他語言)
著者Huang, Huang-Wen
單位Department of Innovative Information and Technology, Langyang Campus, Tamkang University
出版者Tamkang University
著錄名稱、卷期、頁數淡江理工學刊=Journal of Applied Science and Engineering, 18(3), pp.275-288
摘要Radiofrequency ablation (RFA) has been used successfully in the treatment of liver tumors. However, current RFA procedures are less effective against tumors that are large. The purpose of this study was to investigate internally cooled multiple-electrode technique with radio-frequency ablation (RFA) which technique could provide larger thermal lesion by using computer simulation and to determine optimal RF electrode spacing based on coagulation necrosis zone volume. Multiple electrically independent electrodes have been powering up by switching to the next electrode at a predetermined time interval of certain time period. As to computer models, the mathematical equations use Laplace equation of electric field calculation, and Bio-heat transfer equation of calculation temperature field. Numerical methods will consider Gauss-Seidel iteration to obtain 3-D finite difference solutions of a set of partial differential equations for a simple three-dimensional cubic geometry model. Maximum tissue temperature (T_(max)) is used as a critical index for reaching thermal lesion formation during RFA and threshold temperature (T_(thresh)) is used to estimate coagulation zone volume. Cylindrical RF cool-tip electrode is internally cooled at constant water temperature. Results showed several clover-shaped resultant coagulation necrosis and enlarged thermal lesions which were consistent with experimental results.
關鍵字Multiple-electrode;Internally-cooled Electrode;Radiofrequency Ablation;Coagulation Necrosis;Bio-heat Transfer
語言英文
ISSN1727-2394
期刊性質國內
收錄於EI;
產學合作
通訊作者Huang, Huang-Wen
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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