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- W2076896510 abstract "Stents are often inserted into internal orifices to treat blockage due to tumor ingrowth. Stents are favored due to their minimally invasive nature, possible avoidance of a surgical procedure, and their ability to palliate surgically non-resectable disease. Because of rapid tumor growth however, a treatment means to prevent overgrowth through the stent and resultant blockage is required. To further this goal, experiments were performed in which a stent was placed in tissue and heated with radiofrequency (RF) energy to coagulate a cylinder of tissue, thereby eradicating viable tissue in the proximity of the stent. Temperatures were measured at the central stent surface and edges over time during a 5 - 10 minute heating in phantom and in fresh tissue. In addition, a finite element model was used to simulate the electric field and temperature distribution. Blood flow was also introduced in the model by evaluating RF application to stents to determine effectiveness of the energy applications. Changing perfusion and tissue electrical conductivity as a function of temperature was applied as the tissue was heated to 100 degree(s)C. Results from the electric field model will be shown as well as the thermal distribution over time from the simulations. Lastly, results from the damage integral will be discussed." @default.
- W2076896510 created "2016-06-24" @default.
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- W2076896510 date "1998-04-02" @default.
- W2076896510 modified "2023-09-23" @default.
- W2076896510 title "<title>Heating stents with radio frequency energy to prevent tumor ingrowth: modeling and experimental results</title>" @default.
- W2076896510 doi "https://doi.org/10.1117/12.304337" @default.
- W2076896510 hasPublicationYear "1998" @default.
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