"Patients given eight times the normal radiation dose - All 206 patients affected have been alerted – although around 80 already suspected something was wrong after their hair started falling out. Officials at Cedars-Sinai said they became aware of the problem in August after a patient who had received a scan noticed an unexpected loss of hair, which should not have happened. All hospitals in the US have now been urged to review their safety protocols for CT scans, and California's Department of Health is investigating the overdoses."