A dozen hospitals in the US have developed high tech mobile stroke units aimed at decreasing time to treatment in stroke. The units include state-of-the-art ambulances with a CT scanner, imaging tech, paramedic, nurse, neurologist or telemedicine technology connecting to one, and tPA for treating clots. When a 9-1-1 call is placed for stroke, the mobile unit drives within a 7 to 8 mile radius while paramedics in a regular ambulance evaluate the patient. If the patient is having an ischemic stroke, the mobile stroke unit continues to the patient’s location or meets them halfway during transport in the regular ambulance. So far, about 30% of stroke patients treated with mobile stroke units receive care within the first hour after a stroke, compared to just 1% in the ER. A large randomized trial in Houston, Memphis, and Denver is currently looking at outcomes and cost effectiveness of these units.