Fig. 1.

The effect of triggering.

Representative DWIs from a single slice of one subject (4.8 months, male). For the triggered series all 20 images are shown, for the non-triggered series only images with the largest differences are shown as examples. Intensity scaling is arbitrary, but constant across images shown. (A) Demonstration of triggered acquisition resulting in low volume-to-volume variance with 20 consecutive images without artifacts. (B) Without triggering the volume-to-volume variance increases resulting in visible positive and negative differences in signal intensities. Six representative examples are shown with the most prominent artifacts marked with arrows (altogether 10 out of 20 consecutive images showed some artifacts).