MRI-Based Multiscale Model for Electromagnetic Analysis in the Human Head with Implanted DBS
Figure 3
Electrical model: (a) model of the electrodes and (b) a zoomed view of the microresolution mesh around the electrode. Caudate, putamen, GPe, and GPi were labeled as grey matter ( S/m, ). The DBS is made of platinum/iridium conductor wire and electrodes ( S/m) with 80 A urethane insulation ( S/m, ) [20]. The high resolution of the model allowed to outline and precisely characterize both geometrically and electrically small anatomical details such as the white matter ( S/m, ) between the GPe and the GPi (i.e., the internal medullary lamina IML) and between the GPe and the putamen (i.e., the external medullary lamina EML) and the caudoputaminal bridges (grey matter).
