Lung cancer screening with low dose computed tomography (CT) is the only method ever
proven to reduce lung cancer–specific mortality in high-risk current and former cigarette
smokers. Radiation exposure from annual screening CT examinations and subsequent CT
and nuclear medicine testing to further evaluate positive screening CTs is sometimes
raised as a reason to avoid screening and is often misunderstood. With all testing,
there are potential benefits and risks. As we sit on the brink of widespread adoption
of lung cancer screening CT, we aim to explain why the risks associated with radiation
exposure from lung cancer screening are very low and should not be used to avoid screening
or dissuade individuals who qualify for screening CT to participate in a lung cancer
screening program.
Keywords
lung cancer - screening - computed tomography - radiation exposure - relative risk