PMC9990764_01
Results from preoperative MRI imaging and postoperative electrode localization. (a) shows a coronal section of the noncontrast T1-weighted MRI with the blue arrow pointing at the hyperintense lesion approximately 2 weeks after symptom onset (image by courtesy of Dr. J. Meyer, Radiologikum Krefeld) (b) coronal and (c) axial section of FLAIR-weighted 3 Tesla MRI used for stereotactic planning 6 months after symptom onset. The blue arrow points at the hyperintense lesion in (a), (b) and (c). Directional lead superimposed on a 7T MRI in the left GPi (blue) in relation to the lesion as extracted from preoperative imaging and normalized into Montreal Neurological Institute (MNI) space (orange) in (d) lateral view (e) anterior view. Head models indicate image orientation. 3D headmodel ("Head"; https://www.thingiverse.com/thing:979818) by figure (https://www.thingiverse.com/figure/about) licensed under CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/); downloaded 07/20/2021).
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F1
Images of the preoperative 3D-MRI revealing a hyperintense lesion in the left putamen which extends into the pallidum are shown in Figures 1a-c. The patient was implanted with a directional electrode (Cartesia D-Lead, Boston Scientific) unilaterally in the left GPi [Figures 1d and e] at our center.