4D velocity measurements in intracranial aneurysms using 3T phase contrast MRI angiography

To obtain hemodynamic descriptors of intracranial aneurismal flow, phase contrast MRI was performed on two aneurysms. To compare accelerated with non-accelerated scans, an acceleration technique called k-t BLAST was applied to one of the scans and compared with the non-accelerated scan. Results showed that velocity magnitude, directions and vorticity could be visualized accurately in non-accelerated measurements, but the accelerated scan showed a significant deviation from the non-accelerated scan.