title: The Rate of Magnetic Resonance Imaging in Patients with Deep Brain Stimulation.
abstract: For Parkinson's disease (PD), essential tremor (ET), and dystonia patients with deep brain stimulation (DBS) implants, magnetic resonance imaging (MRI) requires additional safety considerations due to potentially hazardous interactions.
  
  
  
  A propensity-matched cohort of DBS-implanted patients was analyzed to determine the likelihood of needing MRI.
  
  
  
  Patients with new DBS full-system implants (n = 576) were identified in the Truven Health MarketScan® Commercial Claims and Medicare Supplemental Databases (2009-2012). Patients diagnosed with PD, ET, or dystonia and no DBS implant were identified (DBS-indicated patients: n = 11,216). The DBS-indicated patients were continuously enrolled for 4 years and matched for age, gender, and propensity score based on comorbid conditions to DBS-implanted patients (n = 4,878 and 543, respectively). A Kaplan-Meier survival curve of time to first MRI was extrapolated to 10 years.
  
  
  
  An estimated 56-57% of DBS-indicated patients need an MRI within 5 years and 66-75% within 10 years after implantation. While 92% of DBS-implanted patients' MRI after implantation was of the head, for DBS-indicated patients, 62% of MRIs were of the body, potentially unrelated to the primary diagnosis.
  
  
  
  This analysis highlights the projected utilization of MRI in the DBS population for head and full-body images.
authors.affiliation: St. Luke's University Health Network, Bethlehem, Pa., USA.
authors.forename: Steven
authors.initials: S
authors.lastname: Falowski
authors.forename: Yair
authors.initials: Y
authors.lastname: Safriel
authors.forename: Michael P
authors.initials: MP
authors.lastname: Ryan
authors.forename: Liesl
authors.initials: L
authors.lastname: Hargens
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D046690:Deep Brain Stimulation; D020821:Dystonic Disorders / Q000000981:diagnostic imaging* / Q000601:surgery; D020329:Essential Tremor / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000000981:diagnostic imaging* / Q000601:surgery; D057216:Propensity Score; D055815:Young Adult