Arterial spin labeling methods can be used to produce vessel selective angiograms. However, to do this in 3D or 4D is extremely time consuming as many encodings of high spatial (and temporal) resolution images are needed. We propose an optimized acquisition and reconstruction method to create high quality angiogams is five minutes or less. For the acquisition protocol we explore different sampling patterns across encoded images, and for the reconstruction method different ways of constraining the signal temporally.
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