Abstract #3238

Simultaneous Multi-Slice Imaging with ESPIRiT

Gaojie Zhu¹, Hai Luo¹, Bin Wang¹, Xiang Zhou¹, and Leping Zha^1,2

¹Advanced Application, Alltech Medical Systems, Chengdu, China, People's Republic of, ²Advanced application, Alltech Medical Systems America, Cleveland, OH, United States

Simultaneous multi-slice (SMS) acquisitions with SENSE reconstruction rely greatly on the fidelity of coil sensitivity maps. Due to the difficulty on choosing polynomial orders, traditional polynomial fitting method often results in residual spatial oscillations or influence from imaging content, which compromise the reconstruction quality. ESPIRiT (An Eigenvalue approach to auto-calibrating parallel MRI) is a new technique to estimate sensitivity map from auto-calibration signal. It is a sub-space based method that is highly robust to many types of errors because the estimated subspace automatically adapts to inconsistencies in the data. We propose to extend the simultaneous multi-slice imaging with ESPIRIT for higher-fidelity sensitivity distribution estimation and highly robust reconstruction.

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