We correlated tumor stiffness (TS) measured with MR elastography (MRE) to degree of tumor enhancement and necrosis on contrast-enhanced T1-weighted imaging (CE-T1WI) in hepatocellular carcinomas (HCC) treated with locoregional therapy. Patients with HCC who underwent locoregional treatment and controls with newly diagnosed untreated HCC were included. TS values were obtained by placing regions of interest (ROIs) over HCCs on stiffness maps. Visual assessment of tumor necrosis on subtraction images and calculation of enhancement ratios by placing ROIs over tumors on CE-T1WI was performed. TS measured with MRE showed a significant correlation with tumor enhancement and necrosis.