50 years, Female, Reason: h/o right DBS; planning for left side DBS placement. Examination is obtained for operative planning. There is a right transfrontal DBS lead in place with the lead tip in the region of the subthalamic nucleus on the right. There is T2 hyperintensity involving the proximal aspect of the lead which is nonspecific and may represent gliosis or inflammatory response. No significant edema, intracranial mass, or mass effect. No masses or vascular abnormalities are evident along the expected trajectory of a planned left-sided DBS lead. No hydrocephalus. No extra-axial collections. Major arterial and venous structures are patent.
Examination for operative planning. Right-sided DBS lead as above.