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Abstract #1756

Driving Mutually Coupled Coils in Gradient Array Systems in Magnetic Resonance Imaging

Koray Ertan1,2, Soheil Taraghinia1,2, and Ergin Atalar1,2

1National Magnetic Resonance Resarch Center (UMRAM), Bilkent University, ANKARA, Turkey, 2Department of Electrical and Electronics Engineering, Bilkent University, ANKARA, Turkey

Gradient array systems recently have gained attention due to their various flexibilities and capabilities in different applications. Reducing the mutual-coupling between the coil elements is one of the constraints during the process of the coil design. However, by determining any existing coupling value between the array elements, required decoupling can be achieved. For a typical trapezoidal gradient current waveform, desired voltage values during rise/fall times, are recalculated considering all mutual-couplings between the array elements. This method is evaluated experimentally for different trapezoidal current combinations and can be used in any gradient array system with mutually coupled elements.

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