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Intracranial (blue) and brain (green) volumes as a function of GA across 184 fetal MRIs with normal findings. Individual points represent automated measurements of volume in individual fetal brain MRIs. The center line represents a moving average across these points, ±1 (dark shading) or 2 (light shading) SDs. One fetal brain is shown as an example in the insets. Images shown in Figure 3A are denoted by a +.
