• Neurosurgery · Nov 2022

    Targeting Accuracy and Clinical Outcomes of Awake Vs Asleep Interventional MRI-Guided Deep Brain Stimulation for Parkinson's Disease: The UCSF Experience.

    • Anthony T Lee, Kasey J Han, Noah Nichols, Vivek R Sudhakar, John F Burke, Thomas A Wozny, Jason E Chung, Monica M Volz, Jill L Ostrem, Alastair J Martin, Paul S Larson, Philip A Starr, and Doris D Wang.
    • Department of Neurological Surgery, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, California, USA.
    • Neurosurgery. 2022 Nov 1; 91 (5): 717725717-725.

    BackgroundInterventional MRI (iMRI)-guided implantation of deep brain stimulator (DBS) leads has been developed to treat patients with Parkinson's disease (PD) without the need for awake testing.ObjectiveDirect comparisons of targeting accuracy and clinical outcomes for awake stereotactic with asleep iMRI-DBS for PD are limited.MethodsWe performed a retrospective review of patients with PD who underwent awake or iMRI-guided DBS surgery targeting the subthalamic nucleus or globus pallidus interna between 2013 and 2019 at our institution. Outcome measures included Unified Parkinson's Disease Rating Scale Part III scores, levodopa equivalent daily dose, radial error between intended and actual lead locations, stimulation parameters, and complications.ResultsOf the 218 patients included in the study, the iMRI cohort had smaller radial errors (iMRI: 1.27 ± 0.72 mm, awake: 1.59 ± 0.96 mm, P < .01) and fewer lead passes (iMRI: 1.0 ± 0.16, awake: 1.2 ± 0.41, P < .01). Changes in Unified Parkinson's Disease Rating Scale were similar between modalities, but awake cases had a greater reduction in levodopa equivalent daily dose than iMRI cases ( P < .01), which was attributed to the greater number of awake subthalamic nucleus cases on multivariate analysis. Effective clinical contacts used for stimulation, side effect thresholds, and complication rates were similar between modalities.ConclusionAlthough iMRI-DBS may result in more accurate lead placement for intended target compared with awake-DBS, clinical outcomes were similar between surgical approaches. Ultimately, patient preference and surgeon experience with a given DBS technique should be the main factors when determining the "best" method for DBS implantation.Copyright © 2022 The Author(s). Published by Wolters Kluwer Health, Inc on behalf of Congress of Neurological Surgeons.

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