PMC6214811_01
MRI Targeting and Atlas Mapping for DBS Lead. Deep brain stimulation (DBS) leads were stereotactically implanted in the ventroposterolateral globus pallidus (GPi) and were localized with magnetic resonance imaging (MRI) and microelectrode mapping. A quadripolar electrode (Model 3387; Medtronic, MN) with four contacts numbered 0 (ventral) to 3 (dorsal) for the left side and numbered 8 (ventral) to 11 (dorsal) for the right side was implanted. The GPi lead location on postoperative computed tomography was fused with the preoperative MRI scan and measured using Schaltenbrand-Bailey's stereotactic atlas. We confirmed a well-placed location for the DBS leads on both sides. The coordinates for the tip of the right lead were X 21.06 mm; Y 0.06 mm; Z -5.09 mm; AC-PC angle 65; centerline angle 7. The coordinates for the tip of the left lead were X 21.25 mm; Y -0.64 mm; Z -3.17 mm; anterior commissure-posterior commissure (AC-PC) angle 65; centerline angle 1. Brain MRI T2 sequence coronal (A), axial (B), and sagittal (C) views of right GPi lead location. Brain MRI T2 sequence coronal (D), axial (E), and sagittal (F) views of left GPi lead location. The red line indicates the lead trajectory. Outlines of the atlas: blue, caudate nucleus; red, globus pallidus internus; lateral green, globus pallidus externus; internal green, thalamus; yellow, optic tract.
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The lead location was confirmed on a postoperative computed tomography scan fused with the preoperative MRI scan (Figure 1).