FIG 1. Images of a 41-year-old man who presented with blurred vision and headache. The fast-FLAIR imaging parameters were as follows: 9000/119/1 (TR/TE/excitations); acquisition time, 3 min 27 s; field of view, 175 x 280; matrix, 154 x 256. The T1-weighted imaging parameters were as follows: 540/12/1; acquisition time, 2 min 39 s; field of view, 188 x 250; matrix, 144 x 256.

A, Fast-FLAIR image shows an extensive brain stem lesion.

B, Fast-FLAIR image shows that the lesion dramatically improved after surgical treatment of pheochromocytoma.

C, Fast-FLAIR image shows periventricular hyperintensities.

D, Fast-FLAIR image shows that the periventricular hyperintensities also totally resolved after surgery.

E, T1-weighted image shows that the pons was swollen at the begining of the symptoms.

F, T1-weighted image shows that the pons returned to normal size and configuration after surgery.