A 2007 study conducted by researchers at the Children's Hospital of Philadelphia found that magnetic resonance imaging (MRI) shows lung damage in nonsmokers as a result of secondhand smoke exposure. The findings were presented in Chicago at the annual meeting of the Radiological Society of North America.
Lead author Chengbo
Wang, Ph.D., a magnetic resonance physicist in the Department of Radiology at
The Children's Hospital of Philadelphia, stated, "We used a special type
of magnetic resonance imaging to find these
structural changes in the lungs. Almost one-third of nonsmokers who had been exposed to secondhand cigarette smoke for a long time developed these structural changes."
Wang added, "To
our knowledge, this is the first imaging study to find lung damage in non-smokers
heavily exposed to secondhand smoke. We hope our work strengthens the efforts
of legislators and policymakers to limit public exposure to secondhand smoke."