3D Cones Reordering Design Methods for Whole-Heart Coronary MR Angiography

For whole-heart coronary MRA, we are developing a sequence based on alternating-TR SSFP and 3D cones k-space sampling. For SSFP imaging, the order in which each readout is acquired must be carefully chosen to avoid eddy current effects. In this work, multidimensional golden means and phyllotaxis designs were developed for the 3D cones trajectory to sample a more distributed region of k-space during each heartbeat without introducing eddy current artifacts. For verification of signal quality and eddy current reduction, these methods were compared to the default sequential ordering.

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