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We present in this work a 3D-CINE whole-heart reconstruction that we developed for free-running 3D‑radial fully self-gated acquisitions. The reconstruction is compressed-sensing-based with temporal-total-variation (tTV) regularization, which is known to corrupt or compress motion and to blur moving structures. In order to solve these drawbacks, we regularize by an improved tTV equal to the one-norm of the sum of the motion-corrected-residuals between adjacent frames. While this strategy has already been applied for various trajectories, it has never been applied for 3D-radial in free-running. In this study, we demonstrate quantitatively and qualitatively that this strategy in fact improves image quality.
Milani et al. (Wed,) studied this question.