Streaking artifact is one of the major causes of image quality degradation in radial MRI. Since multicoil arrays are widely used in modern MR scanners, an easy way to reduce streaking artifacts is to identify coil elements that are contaminated by a high level of streaks, and then exclude them from image reconstruction. However, such an approach requires accurate clustering algorithms to automatically select unwanted coil elements. In this work, a method called “Unstreaking” is proposed for automatic streaking artifact reduction without the need to exclude coil elements. The method was tested for accelerated radial DCE-MRI of the liver.
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