FIG. 3.

SR-FPE, MAVRIC, and MAVRIC-SL acquisitions using both self and externally calibrated parallel imaging (both retrospectively decimated self-acquired and prospectively acquired) are shown on a total hip replacement phantom, demonstrating reductions in acquisition time of approximately 25% (8 min for SR-FPE and 83 s for MAVRIC and MAVRIC-SL). The higher net acceleration factor and the external calibration process caused relatively small differences between self-calibrated and retrospectively decimated externally-calibrated acquisitions. Different sampling patterns, view-ordering schemes, and the resulting differences in the evolution of the magnetization in the echo train caused larger differences in self-calibrated and prospectively acquired, externally calibrated acquisitions.