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Topic - Clifford Chao
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"There's no linear relationship to say if you got this amount, it would cause a certain percent of cancer down the road," said Dr. Clifford Chao, chief of cancer radiation at New York-Presbyterian Hospital.
A: You'd have to eat 2 pounds of the most contaminated spinach to absorb about as much radiation as you'd get from a CT scan of the head, says Dr. Clifford Chao, radiologist-in-chief at New York-Presbyterian Hospital.