Female, 10 years old, with epilepsy, preoperative planning examination with grids in place. Precontrast T1-weighted imaging demonstrates evidence of left sided craniotomy for placement of intracranial grids which drape over the left frontal and parietal lobes. A layer of extra-axial fluid is seen along the craniotomy and grids which is within expected limits. The left-sided cerebral sulci are effaced and the midline is shifted slightly to the right, again as expected. An area of cystic change or encephalomalacia is redemonstrated in the left opercular tissues.
Limited imaging for surgical guidance demonstrates left-sided craniotomy with placement of intracranial EEG grids.