MRI-guided focused ultrasound for essential tremor.

This video depicts a left-sided MRI-guided focused ultrasound (MRgFUS) thalamotomy for a right-arm tremor in a 76-year-old, right-handed man with bilateral upper-extremity tremors. The patient tolerated the procedure well, with immediate tremor reduction that persisted at the 1-month follow-up, and there were no adverse events noted during intraoperative testing, postoperative testing, or follow-up. This case highlights MRgFUS as an effective, safe, incision-free treatment option for medically refractory essential tremor. Additional research is required to establish the long-term efficacy of MRgFUS compared with other surgical treatment options such as deep brain stimulation (DBS) and radiosurgery. The video can be found here: https://stream.cadmore.media/r10.3171/2024.7.FOCVID2472.