Abstract #3234

Can multi-slice information improve the conditioning of in-plane acceleration?

José P. Marques¹ and David G. Norris¹

¹Donders Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, Netherlands

To improve the conditioning of GRAPPA enabled in-plane acceleration by using phase encoding shifts of spatially neighbouring slices. Parallel imaging offers the possibility to reduce acquisition time or echo train lengths needed to fully encode a given object. New k-space trajectories and reconstruction techniques offer the possibility of large acceleration factors in the slice direction (in the case of SMS) or in either of the two phase encoding directions in volumetric imaging. While 2D and 3D reconstructions can be seen on a common framework, it is not straightforward to, in conventional multi-slice imaging, have more than 3-4 fold inplane acceleration.

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