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Abstract #3953

Gradient Field Design for RF Excitation in Simultaneous Multi-Slice and Simultaneous Multi-Slab Imaging by Using a Z-Gradient Array

Koray Ertan1, Soheil Taraghinia1, Hamed Mohammadi2, and Ergin Atalar1

1National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey, 2Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey

Multiple locations inside the volume of interest can be mapped to same frequency by applying spatially oscilating magnetic fields (SOMFs) created by 9 channel z-gradient array. Such a mapping can lead to excitation of multiple slices or slabs with a single band RF pulse as well as doubling the number of slices excited by a multi-band RF pulse. Depending on the slice or slab locations, spatially oscillating magnetic fields can be shifted using a independent gradient amplifiers. We have demonstrated 2 slab excitation with a single band RF pulse and 6 slice excitation with a 3-band RF pulse.

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