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Radio frequency ablation (RFA) for lung cancer has increasingly been used over the past few years because RFA is minimally invasive treatment for patients. As a feature of RFA for the lung cancer, lung has the air having low thermal conductivity. Therefore, RFA for lung has the advantage that only the tumor is coagulated because heating area is confined to the immediate vicinity of the heating point...
An electrosurgery is a fundamental operation that utilizes Joule heat generated by the passage of a radiofrequency current. Surgical simulators are demanded for training of the electrosurgical skill with fewer complications. However, foregoing simulators have never implemented a series of physics phenomena in electrosurgery. The aim of this study is to construct a surgical simulator with a unified...
The Cool-tip is one of the most widely employed electrodes in radiofrequency (RF) ablation (RFA) of hepatic tumors. This electrode creates reliable geometry and coagulation zones. Despite the advantages of this electrode, during the ablation is produced a phenomenon called roll-off in which impedance increases, energy deposition completely stops and the lesion size cannot be increased. Consequently,...
This paper describes a cell culture monitoring system for regenerative medicine. To realize this monitoring system, a new culture vessel and a removable measurement unit were proposed. The measurement unit was installed in the culture vessel and it was used to measure important cell culture parameters (e.g., temperature, CO2 level, and pH). Thus, the status of the culture could be monitored. In addition,...
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