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Abstract #5064

On the profile ordering of Golden Angle radial Simultaneous Multi-Slice imaging

Pim Borman1, Rob H.N. Tijssen1, Bas Raaymakers1, Chrit Moonen2, and Clemens Bos2

1Radiotherapy, UMC Utrecht, Utrecht, Netherlands, 2Imaging Division, UMC Utrecht, Utrecht, Netherlands

Golden angle radial sampling allows for flexible sliding window reconstructions while minimizing motion sensitivity and undersampling artifacts. Simultaneous MultiSlice (SMS) can be used to increase the spatial coverage without decreasing the framerate. Here we show that the golden angle profile ordering is in principle not compatible with the in-plane phase cycling scheme required by SMS. It follows that these are only compatible for a certain number of spokes, namely when the number of spokes is part of the Fibonacci sequence and the SMS factor is a divisor of this number.

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