Before revision:  Manual segmentation of the cortical plate, or manual refinement of automatic segmentations is tedious and time consuming, and automatic segmentation of the cortical plate  is challenged by the relatively low resolution of the reconstructed fetal brain MRI scans compared to the thin structure of the cortical plate, partial voluming, and the wide range of variations in the morphology of the cortical plate as the brain matures during gestation.
After revision:  Manual segmentation of the cortical plate, or manual refinement of automatic segmentations is tedious and time consuming, and automatic segmentation of the cortical plate , on the other hand, is challenged by the relatively low resolution of the reconstructed fetal brain MRI scans compared to the thin structure of the cortical plate, partial voluming, and the wide range of variations in the morphology of the cortical plate as the brain matures during gestation.