  The analysis of the recent neutral-current elastic neutrino and
antineutrino-nucleus scattering cross sections measured by the MiniBooNE
Collaboration requires relativistic theoretical descriptions also accounting
for the role of final-state interactions. In this work we investigate the
sensitivity to final-state interactions and compare the MiniBooNE data with the
results obtained in the relativistic Green's function model with different
parameterizations for the phenomenological relativistic optical potential.
