Publication – Bret Nelson on Prehospital Ultrasound Bret Nelson and Mt. Sinai’s director of Disaster Preparedness and Prehospital Care, Kevin Chason, collaborated on this pilot study on use of Prehospital FAST and Aorta US which showed that paramedics can obtain and interpret these studies. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to print (Opens in new window)Click to email this to a friend (Opens in new window)