[Correspondence] Focused ultrasound pallidothalamic tractotomy for Parkinson's disease: the field is moving fast

In our Personal View on focused ultrasound, we covered pallidothalamic tractotomy as a potentially effective treatment for Parkinson's disease.1 However, we labelled this approach as experimental. Notably, a week before our publication, the US Food and Drug Administration (FDA) approved staged bilateral pallidothalamic tractotomy for use in patients with Parkinson's disease, therefore validating its clinical application. This regulatory decision was based on the results of a multicentre, uncontrolled trial applying unilateral and staged bilateral tractotomy (NCT04728295), whose findings have not been published yet.