Frameless stereotactic placement of foramen ovale electrodes in patients with drug-refractory temporal lobe epilepsy.

Objective: Semi-invasive foramen ovale electrodes (FOEs) are used as an alternative to invasive recording techniques in the presurgical evaluation of patients with temporal lobe epilepsy. To maximize patient safety and interventional success, frameless stereotactic FOE placement by use of a variation of an upper jaw fixation device with an external fiducial frame, in combination with an aiming device and standard navigation software, was evaluated by the Innsbruck Epilepsy Surgery Program.

Methods: Patients were immobilized noninvasively with the Vogele-Bale-Hohner headholder (Medical Intelligence GmbH, Schwabmünchen, Germany) to plan computed tomography and surgery.

Accuracy of stereotactic electrode placement in deep brain stimulation by intraoperative computed tomography.

The purpose of this study was to evaluate the accuracy of stereotactic electrode placement in patients undergoing deep brain stimulation by using pre- and postoperative computed tomography (CT). Twenty-three patients with movement disorders (Parkinson's disease (n=7), tremor (n=9), dystonia (n=7)) treated with bilateral deep brain stimulation (DBS) (overall 46 target points) were investigated. The target point of the electrode was planned stereotactically in combination with a preoperative stereotactic helical computed tomography (CT).

Long-term outcome of laminectomy for spinal stenosis in octogenarians.

Study Design: Cohort study with follow-up after at least 1.5 years.

Objectives: The purpose of this study was to determine long-term safety and efficacy of laminectomy in octogenarians.