Tau proteins play an important role in our normal brain function, mainly by helping to stabilize neurons in the brain. But in Alzheimer’s disease, tau proteins can misfold and tangle inside neurons.

Preparing for a PET scan requires switching to a no-sugar diet the day before the scan. People with diabetes may have special instructions regarding medications. Doctors typically schedule PET scans ...

PET scans can detect amyloid plaques and tau tangles in the brain, which are often early signs of Alzheimer’s disease. But they’re not enough on their own to make a diagnosis. Alzheimer’s disease is ...

DURHAM, N.C. – Among patients with mild or no cognitive impairment, brain scans using a new radioactive dye can detect early evidence of Alzheimer's disease that may predict future decline, according ...

The results showed that in some people, especially those with conditions other than Alzheimer’s disease, the scan signal was influenced more by iron or inflammation than by tau itself. In other words, ...

Before you take that walk or ride a bike, think again--especially if you will be undergoing a positron emission tomography (PET) scan any time soon. "Any type of physical activity--from tapping your ...