FIG 3. MR images of the patient’s head, obtained on hospital day 17, 3 days after renormalization of overcorrected hypernatremia.

A, FLAIR image now demonstrates the classic trident-shaped pontine signal intensity abnormality.

B, The extent of DWI signal intensity abnormality in the pons has also become more extensive, assuming a trident-shape.

C, The b = 0 image has also become abnormal in the interim.

D, The ADC map again shows that the high DWI signal intensity corresponds to restricted diffusion (see Figure 1).