Video 1.
Case 1. Pre-deep brain stimulation (DBS). The patient had almost immediate onset of orthostatic leg tremors on standing and had extreme difficulty standing without holding on to the table or walls. Post DBS (10 months). The patient demonstrates no visible tremor on standing, and has no difficulty at all standing in place without support.
Figure 1
Imaging of Lead Placement. (A) Case 1. Preoperative magnetic resonance imaging and post‐lead intraoperative computed tomography (CT) scan are co‐registered using Medtronic FrameLink software. Targeted contacts are contact 1 on the left (L1) and contact 9 on the right (R2). On the left, the stereotactic error of contact 1 is 1.1 mm from the intended target (–14.25, 6.35, 0). On the right, the stereotactic error of contact 9 is 1.1 mm from the intended target (–14.25, 6.35, 0) (active contacts: left, case(+), 1–, 3–; right, 11+, 9–, 10–). (B) Case 2. Intraoperative post‐lead placement CT shows the position of contact 2 on the left ventralis intermedius (VIM) lead (L2), and contact 9 on the right VIM lead (R2). Contact 2 has a radial error of 0.9 mm off of the stereotactic plan targeting (–13.5, –6.75, 0). Contact 9 has a radial error of 0.7 mm off of the stereotactic plan targeting (13.5, –6.75, 0) (active contact: left, case(+), 2–; right, 11+, 8–,10–; contact 9 is shown because it is between contacts 8 and 10.
