Word: positrons
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Dates: during 1980-1989
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...Positron Emission Tomography. Here the heart is labeled with isotopes that emit charged particles called positrons. A special machine takes simultaneous cross-section views of the heart from different angles; a computer reconstructs the images to give a three-dimensional picture of the heart. "It isn't in clinical use yet, but it's a valuable tool for sophisticated research," says Jeffrey Borer, a cardiologist at New York Hospital...