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SCIENTIFIC LITERATURE · MED

Focused Ultrasound Thalamotomy for Tremor Relief in Atypical Parkisnsonism.

Parkinsons Dis · 2024-03-05

DOI: 10.1155/2024/6643510PMID: 38476865

Open accessresearch-article; Journal ArticleOriginal source ↗

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BackgroundMagnetic resonance imaging (MRI)-guided focused ultrasound (FUS) VIM-thalamotomy has established efficacy and safety in tremor relief in patients with essential tremor and Parkinson's disease. The efficacy and safety in patients with atypical parkinsonism have not been reported.ObjectiveTo report on the efficacy and safety of FUS VIM-thalamotomy in 8 patients with parkinsonism, multiple system atrophy-Parkinsonian type (MSA-P) (n = 5), and dementia with Lewy bodies (DLB) (n = 3).MethodsTremor was assessed in the treated hemibody using the Clinical Rating Scale for Tremor (CRST). The motor Unified MSA Rating Scale (UMSAR) was used in the MSA-P and motor sections of the Unified Parkinson's Disease Rating Scale (UPDRS-III) in DLB patients. Cognition was measured using the Montreal Cognitive Assessment (MoCA).ResultsIn MSA-P and DLB patients, there was immediate tremor relief. CRST scores measured on the treated side improved compared to baseline. During the follow-up of up to 1 year tremor reduction persisted. The change in CRST scores at different time points did not reach statistical significance, probably due to the small sample size. Adverse events were transient and resolved within a year.ConclusionsIn our experience, FUS VIM-thalamotomy was effective in patients with MSA-P and DLB. Larger, controlled studies are needed to verify our preliminary observations.

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