Figure 4.

Coronal T1-weighted MR images acquired before surgery, Fluid Attenuated Inversion Recovery (FLAIR) MR images collected approximately 1 week after surgery, and estimated lesion extent in gray (left to right columns, respectively) showing the anterior, middle, and posterior orbital frontal cortex (top to bottom rows, respectively) for a representative case with a neurotoxic orbital frontal cortex lesion (O-ibo-3). The ideal extent of the lesion is drawn in black on the presurgical T1-weighted images and then transferred onto the postsurgical FLAIR images for reference. Abbreviations and conventions as in Figure 3. Reprinted with permission of the American Psychological Association.