NCI launched the National Lung Screening Trial to compare two ways of testing for early lung cancer in current and former heavy smokers

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On Sept. 18, 2002, the National Cancer Institute launched the National Lung Screening Trial to compare two ways of testing for early lung cancer in current and former heavy smokers: spiral computed tomography and single-view chest x-ray. Both spiral CT scans and chest x-rays have been used in clinical practice to detect lung cancer in asymptomatic individuals, but scientific evidence is inconclusive as to whether screening for lung cancer with either method will reduce lung cancer mortality. The trial will examine the relative risks and benefits of both tests in 50,000 current and former smokers at 30 study sites throughout the U.S.

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Source: National Cancer Institute
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