EditorialPositron emission tomography imaging of the brain of an Alzheimer’s patient at Massachusetts General Hospital in Boston. (Tony Luong/The New York Times)
EditorialPositron emission tomography imaging of the brain of an Alzheimer’s patient at Massachusetts General Hospital in Boston. (Tony Luong/The New York Times)
EditorialPositron emission tomography imaging of the brain of an Alzheimer’s patient at Massachusetts General Hospital in Boston. (Tony Luong/The New York Times)