We examined the effect of B1+ inhomogeneities in 7T MP2RAGE data on hippocampal morphometry using volume- and surface-based evaluation methods. As for the cortex, significant variability in hippocampal and subcortical segmentation outputs are observed between original and corrected MP2RAGE data, especially near GM-CSF boundaries. Importantly, results of data acquired at two sites, using different MR hardware and sequence setups (B1+-sensitive vs insensitive), become more comparable after B1+ correction. These data emphasize the dependency of segmentation performances on anatomical image quality, and stresses the need for careful consideration of sequence parameters when setting up imaging protocols.