Key structural changes seen in brain scans of some patients with memory loss . One year later , many patients with brain changes had developed Alzheimer 's . Memory - loss patients without these changes were mostly stable one year later . The other half of the MCI patients showed only small amounts of tissue damage . Brain imaging could identify who gets Alzheimer 's , help with drug testing .
Key structural changes seen in brain scans of some patients with memory loss . One year later , many patients with brain changes had developed Alzheimer 's . Memory - loss patients without these changes were mostly stable one year later . Brain imaging could identify who gets Alzheimer 's , help with drug testing .