Retrospective Reconstruction of Cardiac Cine Images from Golden-Ratio-Radial MRI using 1D Navigators

To perform cardiac cine imaging a single slice is repeatedly acquired with radial readouts rotated by an angle based on the golden ratio. Performing correlation analysis between interspersed 1D navigator projections, time points corresponding to the same cardiac motion phases were automatically identified and used for retrospective combination of radial readouts from multiple data windows. Analysis of the 1D navigator data provided a detailed correlation function revealing cardiac motion over time. Imaging results were comparable to images reconstructed based on a temporally synchronized ECG showing low artifact level and good image quality in terms of CNR.

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