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Abstract #4242

A Programmable Set of Z-Gradient Array and Active-Shield Array for Magnetic Resonance Imaging

Manouchehr Takrimi1 and Ergin Atalar1,2
1National Magnetic Resonance Research Center, Bilkent University, Ankara, Turkey, 2Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey

A novel programmable set of z-gradient array equipped with an active-shield array is introduced and simulated for diverse applications in magnetic resonance imaging (MRI). The proposed active-shield array can dynamically provide a proper shield for the main array in which its magnetic profile can be programmed based on the required scenario. This is achieved by using a set of independently tunable power amplifiers that feed both array elements individually or in a cluster. As a proof of concept, two sets of arrays are simulated: one for a double-gradient z-coil array and another one possessing a large field of view (FOV).

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