Does low-power inversion recovery MRI preserve brain tissue contrast for patients with Parkinson disease with deep brain stimulators?
Patients with Parkinson disease who have already had a deep brain stimulation face a risk of neural injury if routine, high specific absorption rate MR imaging is performed. Our modified fast spin-echo short τ inversion recovery sequence conforms to very conservative radiofrequency safety limits, while it maintains high tissue contrast for presurgical planning, postsurgical assessment, and radiologic evaluations with greater confidence for radiofrequency safety.
  Preoperative, intraoperative, and postoperative measures to further minimize this risk are described.