Sagittal image slice and summed sagittal projections of standard deviation maps with uniform scaling in arbitrary units generated from 3D data acquisition repetitions of different scan modes acquired in about 8.5 min of scanning for mouse 1. A: Example central sagittal slice. B-F: Summed sagittal projections of standard deviation maps. B: No gating, 44 reps. C: R-gating without reacquisition, 24 reps. D: R-gating with reacquisition, 24 reps. E: CR-gating without reacquisition, 20 reps. F: CR-gating with reacquisition, 20 reps.