A Closer Look At Smoker Lungs
Aided by a powerful imaging technique, researchers have discovered they can detect smoking-related lung damage in healthy smokers who otherwise display none of the telltale signs of tobacco use. Scientists at the University of Wisconsin-Madison were able to probe deeper into smokers' lungs by tracking the movement in the respiratory organs of a harmless gas known as helium. Helium can be inhaled and visually detected via the widely used diagnostic technique known as magnetic resonance imaging (MRI), which produces high-contrast images of the body's soft tissues. The use of helium is a departure from traditional MRI, which typically distinguishes body tissues from one another by tracking differences in water content........
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