Andre Pampel1, Wolfgang Driesel1, Harald E. Moeller1
1Nuclear Magnetic Resonance Unit, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
A simplified coil-modeling method for phased-array coils composed of cylindrically arranged elements was investigated. Provided a good decoupling between the coil elements is achieved, it is shown to be sufficient to calculate the electromagnetic fields of only one stacked element by full-wave electromagnetic simulation. Considering the boundary conditions describing the whole coil in these calculations, the transmit properties of the remaining elements can be obtained using matrix rotations thus considerably saving computation time and data storage space during the coil optimization process.