Objective To improve diagnostic accuracy of osteochondroma by studying the MRI features. Materials and Methods Sixteen patients with histologically proved osteochondroma were investigated by MRI (T1-,T2-weighted sequences,intravenous gadolinium application). MRI features of the hyaline cartilage cap were emphatically analyzed. Results (1)13(13/16) cases had hyaline cartilage cap which were a little hypointensity on T1WI(compared with skeletal muscle),meanwhile hyperintensity on T2WI(11 heavy and 2 slight). ...