MRI and PET imaging studies. (A,
B) MRI post-contrast T1-weighted images of patient no. 1 showing a right occipital single mass before ERKD (A) and a second left occipital mass after ERKD (B). (C-F) FDG PET brain images of patient no. 2: (C) and (E) were done at the beginning of the ERKD protocol. (D) and (F) are images taken 12 weeks after the initiation of ERKD protocol. These show an area of new disease in the left frontal lobe (D) and an area of progressed disease in the left occipital lobe (F).