Abstract #3227

Fast dynamic imaging using multi-shell sampling for variable k-space density k-t acquisitions

Kilian Weiss^1,2, David Maintz², and Daniel Giese²

¹Philips Healthcare, Hamburg, Germany, ²Department of Radiology, University Hospital of Cologne, Cologne, Germany

In this work a new multi shell variable density k-t space sampling scheme for highly accelerated acquisitions with sheared grid k-t space sampling and an adapted reconstruction framework based on a linear reconstruction is proposed. The proposed method is evaluated on numerical phantom data and compared to a conventional k-t PCA acceleration. The proposed method is shown to be comparable to conventional k-t PCA for moderate acceleration factors while outperforming conventional k-t PCA for high accelerations factors allowing for ultra-fast dynamic MRI.

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