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An effective imaging modality to delineate ablated regions after microwave ablation (MWA) therapy is crucial to yield successful treatment outcomes. Ultrasound B-mode imaging is widely used to guide the ablation antenna placement. However, the image quality suffers from relatively low imaging contrast due to the similar echogenicity between the ablated and surrounding tissue. In this study, we applied...
Temperature knowledge may be beneficial to improve the outcomes of thermal treatments for tumor ablation. Among several thermometric methods, contactless approaches based on diagnostic imaging techniques are attractive for this field. Computed Tomography (CT) images are sensitive to temperature, so some groups of research are working to assess the feasibility of CT-based thermometry for monitoring...
The aim of the present study was to simulate and experimental assess the temperature distribution and damaged tissue in ex vivo porcine livers undergoing microwave ablation (MWA). Firstly, the interaction between microwave (MW) and liver was simulated to predict tissue temperature distribution and damaged volume; then numerical simulations were experimentally validated. Simulations were performed:...
The use of a sleeve antenna at 10 GHz for microwave ablation is presented. Results for the specific absorption rate (SAR) for the treatment of a 1 cm tumor placed 20 mm from the surface of the liver are presented. To enhance the ablation process, magnetic nanoparticles are introduced in the tumor. Results for the SAR and the temperature profile in the tumor with the nanoparticles are studied. The...
This paper presents an analysis of heat sink effect in hepatic cancer treatment near arterial vessel for microwave ablation by using finite element method. We analyze the temperature distribution, Specific Absorbtion Rate (SAR) and coagulation area in two models. The first is hepatic tissue without artery and the second is hepatic tissue with artery. In the second model, we specify distance between...
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