Experimental study of resonant cavity applicator with cooling effect of blood perfusion

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We have proposed a non-invasive heating method using the resonant cavity applicator system for deep-seated brain tumors. In this study, the heating properties of a resonant cavity applicator using an agar phantom with the cooling effect of blood perfusion are described. Blood perfusion is an important factor to control the temperature distribution during hyperthermia treatments. The purpose of this study is to demonstrate the cooling effect around blood vessels with the resonant cavity applicator. First, we proposed a simple model made of an agar with a blood vessel. One tube made of Teflon material assumed to be blood vessel with water circulating through it was placed inside the agar phantom. Second, we heated the simple model using the developed resonant cavity applicator. From these heating results, it was found that cooling effects of blood perfusion appear within the heated area approximately 2 cm away from blood vessels.

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