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Author: search.filters.author.Petsarb, K.Subject: search.filters.subject.Microwave thermal ablation

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    Item type:Publication,
    Airflow effect on microwave ablation in lung model
    (2016-02-04)
    Phairoh, C.
    ;
    Sanpanich, A.
    ;
    Kajornpredanon, Y.
    ;
    Petsarb, K.
    ;
    Sroykham, W.
    Pulmonary microwave ablation has been trailed and became dramatically recognized as an alternative surgical method for lung cancer treatment due to its minimal invasive technique and destroyable only a small part of malignant tissue. Even though, lung is realized as a porous tissue in which filled of humid air and a capillary network that rather difficult to control an ablation region, then a prediction of lung destructive region by using MWA simulation seem to be a reliable investigation and numerical tool for supporting this medical maneuver. In this paper, we propose a simulation of microwave thermal ablation for lung cancer treatment in a simple lung model. Microwave applicator was designed as an opened-tip coaxial antenna of 2.45 GHz at 10 Watts. To study an effect of air flow in pulmonary bronchus, a small tube with air flow was also placed close to the microwave applicator then a temperature distribution and coagulation volume at 60 °c were analyzed. The in silico results show a predictable ablation shape which affected by a convection heat transfer of a humid air. However, before a real ablation with swine tissue, an amount of pulmonary blood flow in small blood vessel should be also included in the next investigation inorder to obtain more reasonable results.
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    Thermal ablation for cancer treatment by using microwave energy in a simple lung model
    (2014-01-20)
    Sanpanich, A.
    ;
    Khongkhanon, C.
    ;
    Kajornpredanon, Y.
    ;
    Thanangkul, S.
    ;
    Apaiwong, C.
    Lung cancer or pulmonary cancer is one of a dangerous cancer threatening human life since a long time ago. Even though, a conventional surgery is widely accepted as a gold standard for this cancer treatment, however a new medical maneuver still be investigated to perform with this disease. In this paper, we trail a simulation of thermal ablation by using microwave energy at 2.45GHz, 30 Watts for 10 seconds with an opened-ring coaxial applicator in a simple lung tissue model. An air tracheal also placed in this model in order to compare for a thermal distribution. Although, this model is quite differing from a porous material, but our simulation results of temperature distribution and destructive area at 60 □C guide us some useful information for a real ex vivo with swine tissue in the near future work.