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Abstract #0783

Improved SMS Reconstruction using ReadOut-Concatenated K-space SPIRiT (ROCK-SPIRiT)

Omer Burak Demirel1,2, Sebastian Weingärtner1,2,3, Steen Moeller2, and Mehmet Akçakaya1,2
1Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States, 2Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States, 3Department of Imaging Physics, Delft University of Technology, Delft, Netherlands

Simultaneous Multi-slice (SMS) imaging has great potential for high acceleration rates with minimal loss in SNR. However, due to the unfavorable coil geometry only moderate acceleration rates have been achieved in cardiac applications. Outer volume suppression (OVS) has been proposed to overcome this limitation by suppressing unwanted signal from extra-cardiac tissues such as chest and back. Despite OVS, existing reconstruction techniques may suffer from residual leakage artifacts or noise amplification. In this work, we sought to extend SPIRiT to a readout-concatenated space to improve image quality in highly accelerated perfusion and cine imaging while mitigating leakage and noise amplification.

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