INSIGHTEC has announced that the FDA has approved its Exablate Neuro (Model 4000) system for use with 1.5T MRI in the non-invasive treatment of essential tremor (ET) in patients who have not responded to medication. Exablate Neuro uses focused ultrasound waves to target and ablate the Vim nucleus of the thalamus with no surgical incisions or implants. The treatment is done under MRI guidance for real-time treatment monitoring.