Early cerebellar development in infant brains is very dynamic and highly related to normal cognitive functions and neurodevelopmental disorders, but remains largely unexplored, due to the lack of densely-sampled longitudinal data of early ages. Herein, we unprecedently explored the dynamic developmental trajectories of the volumes in 27 cerebellar lobules based on 511 high-resolution longitudinal structural MRI scans from 235 healthy infants from the Baby Connectome Project (BCP) densely covering the age ranging from birth to 27 months. The trajectories of the cerebellar structures reveal lobule-specific nonlinear developmental patterns and are sexually dimorphic starting from different ages.
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