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Abstract #1416

Contrast Enhancement for SSFP Angiography with Signal Compensation and Compressed Sensing

Tolga ukur1, Michael Lustig1, Dwight Nishimura1

1Department of Electrical Engineering, Stanford University, Stanford, CA, United States

Magnetization-prepared SSFP angiography can produce vessel images without contrast agents, when coupled with segmented k-space acquisitions. However, the preparation needs to be frequently repeated to effectively capture the transient contrast. Because the vessels have more dominant high-spatial-frequency content compared with the background, compensating for the transient signal decay significantly improves the contrast and resolution, while the resulting noise in sparse angiograms is reduced with compressed sensing.