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Abstract #3099

MRI Hybrid Gradient Coil Equipped with a Programmable Z-Array and Conventional X- and Y- Elements

Manouchehr Takrimi1 and Ergin Atalar1,2
1UMRAM, Bilkent University, Ankara, Turkey, 2Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey

A novel hybrid gradient coil consisting of two conventional actively shielded x/y gradient coils and a programmable active-shield z-gradient array coil is introduced and simulated. The proposed hybrid gradient coil can dynamically provide the required magnetic profile based on diverse applications in MRI. This is achieved by using a set of independent power amplifiers that feed the conventional coils and the array elements. To show the flexibility, three magnetic profiles are simulated: (a) a conventional profile; (b) a profile with twice z-gradient intensity and a shifted FOV; (c) a profile with quadruple z-gradient intensity when the active-shield is reverse fed.

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