In radial imaging, streaks due to gradient inhomogeneities can appear even when Nyquist criterion is fulfilled. Earlier techniques targeting this type of streaks remove coils contributing prominent streaks at the cost of signal loss. A phased array beamforming based technique (B-STAR), that can achieve a good trade-off between streak reduction and signal preservation, was proposed as a post-processing method. We propose CACTUS, an alternative technique for streak cancellation, which can be used either as a preprocessing method or with iterative reconstructions. In vivo abdominal experiments show enhanced image reconstructions and improved quantitative parameter maps.
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