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  • Title: MRI-compatible ultrasound heating system with ring-shaped phased arrays for breast tumor thermal therapy.
    Author: Chen HN, Chen GM, Lin BS, Lien PH, Chen YY, Chen GS, Lin WL.
    Journal: Annu Int Conf IEEE Eng Med Biol Soc; 2013; 2013():3726-8. PubMed ID: 24110540.
    Abstract:
    Therapeutic ultrasound transducers can carry out precise and efficient power deposition for tumor thermal therapy under the guidance of magnetic resonance imaging. For a better heating, organ-specific ultrasound transducers with precision location control system should be developed for tumors located at various organs. It is feasible to perform a better heating for breast tumor thermal therapy with a ring-shaped ultrasound phased-array transducer. In this study, we developed ring-shaped phased-array ultrasound transducers with 1.0 and 2.5 MHz and a precision location control system to drive the transducers to the desired location to sonicate the designated region. Both thermo-sensitive hydrogel phantom and ex vivo fresh pork were used to evaluate the heating performance of the transducers. The results showed that the ring-shaped phased array ultrasound transducers were very promising for breast tumor heating with the variation of heating patterns and without overheating the ribs.
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