Akademik Veri Yönetim Sistemi
2022 Medical Technologies Congress (TIPTEKNO), Antalya, Türkiye, 31 Ekim 2022, cilt.1, ss.185-188
Magneto-acousto-electrical tomography with Magnetic Field Measurements (MAET) is a new hybrid imaging modality to image electrical impedance property of body tissues. This modality couples the electrical impedance mapping property of the electrical impedance tomography and high spatial resolution of sonography. In this modality, magnetic field of induced Lorentz currents is detected by receiver coils. Electrical impedance map of the body is reconstructed using voltages induced on the receiver coils. The main aim of this study is to offer a method to use air-cored multi-wound coils with the high-quality factors for MAET with magnetic field measurement signals and remove the coil's transfer function's effects on the measured signals. For this purpose, a simulation study was conducted in COMSOL. In this simulation study ultrasound transducer, coils, and phantom's geometry and properties used in experiments were modeled. The forward problem of the MAET method with magnetic field measurement is solved and the MAET signal is obtained. In addition, a method is proposed to numerically estimate the transfer function obtained by using the electrical circuit diagram of the coil. Finally, the artifact tail on the obtained MAET signal due to the high-quality the factor of the coil is removed using the general inverse Wiener Filter.