A TBI is a unique injury because it is not always immediately obvious that you have suffered an injury. It is not like a broken leg or a cut on your face that is obvious to the observer. To confirm you have a brain injury, a review of several medical records and tests may be necessary. Medical tests that can confirm a TBI include PET scans, MRIs and CT scans. If possible, these tests should be included in your medical records. However, sometimes observation and diagnosis by a medical doctor may be the only way to diagnose a brain injury.