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A three dimensional analysis of slotted tube resonator for MRI

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6 Author(s)
Qiang Chen ; Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan ; Sawaya, K. ; Uno, T. ; Adachi, S.
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A three dimensional model of a slotted tube resonator (STR) used as a probe in the magnetic resonance imaging (MRI), which is loaded by a dielectric body and surrounded by a conducting shield, is analyzed by using the variational method and the dyadic Green's function of a circular waveguide having a dielectric core. Three surface current modes are properly assumed to expand the currents on the STR. The characteristics such as the input impedance, the resonance frequency, the Q value, and the magnetic field distribution are obtained to show the effects of the dielectric body and the conducting shield. Some theoretical results are compared with the measured data to confirm the validity of the present analysis

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Medical Imaging, IEEE Transactions on  (Volume:13 ,  Issue: 4 )