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 . Comment:
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 scans could identify who gets Alzheimer 's , help with drug testing .