Figure 5.
Representative slice from all five 3 T MEMPRAGE volumes of motion study subject 4. The five conditions displayed are a) no motion, no navigator; b) no motion, motion correction on; c) motion with navigator but no motion correction; d) motion with motion correction but no reacquisition; e) motion with motion correction and reacquisition. a) and b) show the subtle change in contrast induced by including the navigators, c) is so motion degraded as to be of questionable value, d) is substantially improved but shows residual contrast degradation and ringing, and e) is relatively close to the no-motion conditions.