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PBS News Hour
Can ultrasound be used to fight Alzheimer's?
At age 61, Judi Polak is five years into a bleak diagnosis: Alzheimer’s disease. But last year she made medical history in a clinical trial, when a team of scientists, engineers and practitioners deployed a novel device to take aim at a big barrier in the fight against her illness. Science correspondent Miles O'Brien reports from Morgantown, West Virginia.
