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Patient 30: vein of Galen malformation (33 weeks' gestation).
A, Sagittal ssFSE image (∞/98/0.5) shows large signal void caused by rapid flow in the vein of Galen varix and dilated straight sinus (arrows).
B, Axial FMPSPGR image (100/4.2/1) shows hyperintensity caused by flow-related enhancement in the varix (arrow).
