Julien Engelhardt1,2, Dominique Guehl3,4, Nathalie Damon-Perrière3,4, Olivier Branchard5, Pierre Burbaud3,4, Emmanuel Cuny5,3. 1. CHU de Bordeaux, Service de neurochirurgie B, Bordeaux, France, julien.engelhardt@gmail.com. 2. Université de Bordeaux, Institut des maladies neurodégénératives, UMR 5293, Bordeaux, France, julien.engelhardt@gmail.com. 3. Université de Bordeaux, Institut des maladies neurodégénératives, UMR 5293, Bordeaux, France. 4. CHU de Bordeaux, Service d'explorations fonctionnelles du système nerveux, Bordeaux, France. 5. CHU de Bordeaux, Service de neurochirurgie B, Bordeaux, France.
Abstract
BACKGROUND: The control of the anatomic position of the active contacts is essential to understand the effects and adapt the settings of the neurostimulation. The localization is commonly assessed by a registration between the preoperative MRI and the postoperative CT scan. However, its accuracy depends on the quality of the registration algorithm and many software programs are available. OBJECTIVE: To compare the localization of implanted deep brain stimulation (DBS) leads in the subthalamic nucleus (STN) between four registration devices. METHODS: The preoperative stereotactic MRI was co-registered and fused with the 3-month postoperative CT scan in 27 patients implanted in the STN for Parkinson's disease (53 leads). Localizations of the active contacts were calculated in the stereotactic frame space and compared between software programs. RESULTS: The coordinates of the active contacts were different between software programs in the 3 axes (p < 0.001) with a mean vectorial error between the deepest contact locations of 1.17 mm (95% CI 1.09-1.25). CONCLUSION: We found a small but significant difference in the coordinates calculated on four different devices. These results have to be considered when performing studies comparing active contact locations or when following patients with an implanted DBS lead.
BACKGROUND: The control of the anatomic position of the active contacts is essential to understand the effects and adapt the settings of the neurostimulation. The localization is commonly assessed by a registration between the preoperative MRI and the postoperative CT scan. However, its accuracy depends on the quality of the registration algorithm and many software programs are available. OBJECTIVE: To compare the localization of implanted deep brain stimulation (DBS) leads in the subthalamic nucleus (STN) between four registration devices. METHODS: The preoperative stereotactic MRI was co-registered and fused with the 3-month postoperative CT scan in 27 patients implanted in the STN for Parkinson's disease (53 leads). Localizations of the active contacts were calculated in the stereotactic frame space and compared between software programs. RESULTS: The coordinates of the active contacts were different between software programs in the 3 axes (p < 0.001) with a mean vectorial error between the deepest contact locations of 1.17 mm (95% CI 1.09-1.25). CONCLUSION: We found a small but significant difference in the coordinates calculated on four different devices. These results have to be considered when performing studies comparing active contact locations or when following patients with an implanted DBS lead.
Authors: Brian L Edlow; Leandro R D Sanz; Robert D Stevens; Olivia Gosseries; Len Polizzotto; Nader Pouratian; John D Rolston; Samuel B Snider; Aurore Thibaut Journal: Neurocrit Care Date: 2021-07-08 Impact factor: 3.210