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Abstract #4403

Multislice Acquisition With Incoherent Aliasing (MICA)

Kangrong Zhu 1 , Robert F. Dougherty 2 , John M. Pauly 1 , and Adam B. Kerr 1

1 Electrical Engineering, Stanford University, Stanford, CA, United States, 2 CNI, Stanford University, Stanford, CA, United States

In conventional simultaneous multislice (SMS) acquisitions, such as CAIPIRINHA and blipped-CAIPI, the simultaneously excited slices alias coherently, because these SMS acquisition techniques repeatedly sample the DFT encoding frequencies in the frequency spectrum of the simultaneous slices. In this work, we describe a new SMS acquisition approach called 'Multislice acquisition with InCoherent Aliasing (MICA)', which uses irregular encoding in order to create incoherent aliasing of the simultaneously excited slices. We demonstrate the feasibility of using MICA for SMS imaging through simulation and in vivo experiments. Our preliminary results show that the performance of MICA is comparable to CAIPI.

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