Images obtained by applying a PC velocity encoded GE pulse sequence on the flow model. (A) Magnitude image obtained from the flow model. (B) Corresponding phase contrast velocity image. The entire 3D object was simulated; not just the slice of interest. (Total number of tissue isochromats 30779693, total number of time-steps 1380000, k-space matrix 256 × 256, slice thickness 10 mm, Kernel execution time on the 4×C2075 system: 111 min for each experiment).