my father had a similar focused ultrasound treatment for tremors. he went from spilling everything that he tried to carry to rock solid with his right hand. it was a life-changing event for him, and now he is impatient for the treatment for his left hand.

he was even able to go back to his woodworking hobby, that he thought he'd never be able to do again.

they did multiple MRI's to make sure they could hit the exact location, and they appear to have done so.