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In this work, a new concept in high field RF head coil design for MRI applications is presented. An 8-element phased array head coil operating at 4T is designed based on a hybrid method combining reciprocity theorem and inverse method. Both circularly or linearly polarized head coils can be designed. A FDTD/MOM calculation method is used to model the phased array head coil and to accurately calculate...
A new definition of mutual impedance for two coils used for simultaneous signal reception in MRI is introduced. The new mutual impedances are used to accurately quantify the mutual coupling effect between the two coils so that it can be removed from the measured terminal voltages. Using the new mutual impedances, a new decoupling method can be formulated to obtain the uncoupled voltages. Numerical...
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