Department of Radiology, Biomedical Research Imaging Center Attribution Yes University of North Carolina at Chapel Hill NITRC UNC 4D Lifespan Cerebellum Atlases The UNC 4D Lifespan Cerebellum Atlases provide an age-conditioned multimodal MRI reference of the human cerebellum spanning birth to 100 years. The resource includes cerebellar atlases at 31 representative ages, with T1w, T2w, T1w/T2w ratio, tissue segmentation, anatomical parcellation, and cerebellar mask volumes aligned to a common UNC BCP/MNI space. Functional parcellations are also provided where available. This resource supports age-matched spatial normalization, cerebellar anatomical analysis, and quantitative studies of cerebellar development and aging. UNC 4D Lifespan Cerebellum Atlases Attribution, MR http://www.nitrc.org/projects/cbl_4d_atlas/, http://www.nitrc.org/projects/cbl_4d_atlas/