Computed Tomography A computed tomography, or CT, scanner uses X-rays to create an image of both bone and brain tissue. CT scans are a first line of screening for severe TBI. With this scan, doctors can see damage to gray matter—the primary type of tissue in regions that manage muscle control, sensory perception, emotion, and speech. But the test, like any type of neuroimaging, requires a trip to the hospital, which may be far from the site of injury. What's more, most experts agree that the scan isn't sensitive enough to detect signs of mild TBI.
