Intraoperative acceleration measurements to quantify improvement in tremor during deep brain stimulation surgery

Medical & Biological Engineering & Computing
Ashesh ShahSimone Hemm-Ode

Abstract

Deep brain stimulation (DBS) surgery is extensively used in the treatment of movement disorders. Nevertheless, methods to evaluate the clinical response during intraoperative stimulation tests to identify the optimal position for the implantation of the chronic DBS lead remain subjective. In this paper, we describe a new, versatile method for quantitative intraoperative evaluation of improvement in tremor with an acceleration sensor that is mounted on the patient's wrist during surgery. At each anatomical test position, the improvement in tremor compared to the initial tremor is estimated on the basis of extracted outcome measures. This method was tested on 15 tremor patients undergoing DBS surgery in two centers. Data from 359 stimulation tests were acquired. Our results suggest that accelerometric evaluation detects tremor changes more sensitively than subjective visual ratings. The effective stimulation current amplitudes identified from the quantitative data (1.1 ± 0.8 mA) are lower than those identified by visual evaluation (1.7 ± 0.8 mA) for similar improvement in tremor. Additionally, if these data had been used to choose the chronic implant position of the DBS lead, 15 of the 26 choices would have been different. These ...Continue Reading

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Citations

Feb 1, 2020·Medical & Biological Engineering & Computing·Ashesh ShahSimone Hemm
Feb 20, 2020·American Journal of Speech-language Pathology·Elizabeth Erickson-DiRenzoCasey H Halpern
Dec 4, 2019·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·B J WilkesD E Vaillancourt

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