[en] We have classified liver tumors on dynamic MRI by analyzing their enhanced patterns, and examined how useful it is for the differential diagnosis of hepatic tumors. We have analyzed the staining patterns and sequential changes of 211 nodules of 184 cases on MRI with the contrast media Gadopentetate gimegulmin (hereafter Gd-DTPA) injection. By analyzing the staining patterns of tumors on MRI, we found that diseases each have characteristic staining patterns. In conclusion, it can be said that dynamic MRI with Gd-DTPA injected has made more accurate qualitative diagnosis possible and has improved the existential diagnosis of diseases of minimal change, identifying the expanse of lesions and the degree of infiltration into tissues and organs. (author)