Even though prolonged exposure to radiation is harmful to humans, X-Rays, CT Scans, and MRIs provide useful diagnostic information to physicians in a noninvasive format that justifies the risk for a short period of time. Radiation therapy is another highly effective weapon against cancer and other invasive health problems. Patients are only exposed to radiation for short periods of time, but the technicians who perform the procedures are particularly susceptible to some serious health problems if they don’t have a safe place to work.