1. A method for automatic contrast enhancement for contouring, comprising: displaying ( 220 ) a volumetric image slice to be analyzed; receiving ( 230 ) a delineation of a target anatomic structure in the volumetric image slice; identifying ( 240 ) a region of interest based upon an area being delineated in the volumetric image slice; analyzing ( 250 ) voxel intensity values in the region of interest; and determining ( 260 ) an appropriate window-level setting based on the voxel intensity values.