▎ 摘　　要

We present scanning-gate images of a single-layer graphene quantum dot which is coupled to source and drain via two constrictions. We image and locate conductance resonances of the quantum dot in the Coulomb-blockade regime as well as resonances of localized states in the constrictions in real space, which are interpreted in light of previous transport experiments. In addition our technique allows us to estimate the extent of these localized states, namely, radii of about 10-13 nm.