A four-dimensional phase-contrast magnetic resonance imaging sequence with respiratory-controlled adaptive k-space reordering (ReCAR-4DPC) offers potential benefits of improved scan efficiency and motion robustness. Imaging was performed on 15 volunteers and 2 patients with aortic dissection. Inter-scan repeatability and inter-reader agreement of flow metrics derived from ReCAR-4DPC was assessed and compared to metrics derived from 2-dimensional phase contrast imaging (2DPC). There was almost perfect inter-scan and inter-reader concordance (Lin's concordance correlation coefficient for all metrics > 0.91 and >0.98 respectively). Concordance with 2DPC was also high (LCCC all > 0.873). RC-4DFlow is reproducible and repeatable, with high concordance with 2DPC metrics.