How do you approach the decision to proceed with staged second-side MRgFUS thalamotomy in a patient with a good unilateral response who later develops disabling contralateral tremor?

Patients with ET who have had successful long-term tremor control on the first treated side can be considered for a second-side treatment after 9-12 months, provided they still meet criteria for the untreated side and do not have any persistent side effects. A second-side treatment can be equally ef...