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 ...

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 ...

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 ...

Tau PET is prying open a window on when and where neurofibrillary tangles appear as Alzheimer’s progresses. At the 12th Clinical Trials on Alzheimer’s Disease Conference, held December 4–7 in San ...

PET scans examine the tissues of the body at a cellular level. Because these tests can measure metabolic activity, such as oxygen use, blood flow and the rate at which specific areas of the body are ...

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 ...