Neuroimaging and Deep Brain Stimulation

Postoperative study of the position of electrode contacts in a patient with bilateral implantation of electrodes in the STN for the treatment of PD. Postoperative 3D MR imaging acquisition with fusion of anatomic data by using a histologically based deformable 3D atlas of the basal ganglia (Yelnik et al⁵⁵). A, 3D posterior oblique view shows the caudate nuclei (blue), the STN (pink), the locus niger (black), and the electrode contacts (yellow, active contacts; blue, inactive contacts; contacts inside or behind the STN are seen in the transparency). B, Frontal view through the active contact. The exact position of the contacts inside the metallic artifact on the MR imaging acquisition is indicated on each side by a yellow dot. Both contacts are located inside the STN (pink). Anatomic limits of the putamen (blue), caudate (blue), locus niger (black), thalamus (green), and optical tracts (orange) on the basis of the 3D atlas are shown. C, Axial view through the right active contact (yellow dot; the left active contact is above and is not seen in this view). The right active contact inside the STN (pink), caudate, putamen, and red nuclei (orange) can be seen. D, Right sagittal view through the right active contact (yellow dot). The same color code is used for caudate, thalamus, locus niger, and optical tract (orange).