A Retrospective Comparison of Multiple Approaches to Anatomically Informed Contact Selection in Subthalamic Deep Brain Stimulation for Parkinson’s Disease

Author:

Brandt Gregor A.12,Stopic Vasilija12,van der Linden Christina12,Strelow Joshua N.123,Petry-Schmelzer Jan N.12,Baldermann Juan Carlos124,Visser-Vandewalle Veerle13,Fink Gereon R.12,Barbe Michael T.12,Dembek Till A.12

Affiliation:

1. Faculty of Medicine, University of Cologne, Cologne, Germany

2. Department of Neurology, University Hospital Cologne, Cologne, Germany

3. Department of Stereotactic and Functional Neurosurgery, University Hospital Cologne, Cologne, Germany

4. Department of Psychiatry and Psychotherapy, University Hospital Cologne, Cologne, Germany

Abstract

Background: Conventional deep brain stimulation (DBS) programming via trial-and-error warrants improvement to ensure swift achievement of optimal outcomes. The definition of a sweet spot for subthalamic DBS in Parkinson’s disease (PD-STN-DBS) may offer such advancement. Objective: This investigation examines the association of long-term motor outcomes with contact selection during monopolar review and different strategies for anatomically informed contact selection in a retrospective real-life cohort of PD-STN-DBS. Methods: We compared contact selection based on a monopolar review (MPR) to multiple anatomically informed contact selection strategies in a cohort of 28 PD patients with STN-DBS. We employed a commercial software package for contact selection based on visual assessment of individual anatomy following two predefined strategies and two algorithmic approaches with automatic targeting of either the sensorimotor STN or our previously published sweet spot. Similarity indices between chronic stimulation and contact selection strategies were correlated to motor outcomes at 12 months follow-up. Results: Lateralized motor outcomes of chronic DBS were correlated to the similarity between chronic stimulation and visual contact selection targeting the dorsal part of the posterior STN (rho = 0.36, p = 0.007). Similar relationships could not be established for MPR or any of the other investigated strategies. Conclusions: Our data demonstrates that a visual contact selection following a predefined strategy can be linked to beneficial long-term motor outcomes in PD-STN-DBS. Since similar correlations could not be observed for the other approaches to anatomically informed contact selection, we conclude that clear definitions and prospective validation of any approach to imaging-based DBS-programming is warranted.

Publisher

IOS Press

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