- They're providing on average about six acute therapies per month, for each of these units. So that's a pretty good number of treatments that they're providing. But, they also found that these units are very labor intensive. They require emergency medical technicians, a nurse, a CT scanner and technician, and neurological expertise as well. Sometimes that's provided by a stroke neurologist on board the unit itself, and then sometimes it's provided by telestroke services instead. So that's a lot of people manning, these mobile emergency units.