Two cases of Wilson's disease, who had been treated for eight years, were examined by MRI at 1.5 tesla. MRI of both cases demonstrated lesions with prolonged T1, prolonged T2 and partially shortened T2 in bilateral lentiform nuclei. Lesions with prolonged T1 & T2 may reflect small cavitary lesions. On the other hand, shortened T2 area may be caused by copper deposits.