Zhengguo Tan1, Volkert Roeloffs1, Dirk Voit1, Arun Joseph1, Markus Untenberger1, Klaus-Dietmar Merboldt1, and Jens Frahm1
The proposed model-based reconstruction technique jointly computes a magnitude
image, a phase-contrast map, and a set of coil sensitivities from every pair of
flow-compensated and flow-encoded datasets obtained by highly undersampled radial
FLASH. Real-time acquisitions with 5 and 7 radial spokes per image resulted in 25.6
and 35.7 ms measuring time per phase-contrast map, respectively. It yields quantitatively
accurate phase-contrast maps with improved spatial
acuity, reduced phase noise, reduced partial volume effects, and reduced streaking artifacts.