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ATS, ERS issue official standards for the quantitative assessment of lung structure
Date:2/17/2010

The ATS and the European Respiratory Society have issued official standards for the quantitative assessment of lung structure.

"This is the first concise state-of-the-art review of stereological methods for lung morphometry that formulates practical guidelines for the use of advanced imaging techniques," said ATS past president, John Heffner, M.D. "The proposed standards ensure that the three dimensional window into the lung offered by advanced imaging techniques will provide the sharp and clear view necessary for the discovery of new respiratory cures."

The research policy statement was published in the February 15, 2010, issue of the American Journal of Respiratory and Critical Care Medicine.

Lung morphometrythe study of the structure of the lung on the whole-organ levelis of growing importance as new advanced imaging techniques provide investigators glimpses of previously inaccessible areas of lung architecture. The lung is composed of networks of increasingly tiny airways which, if laid out end-to-end, would extend for 1,500 miles, as well as tiny air sacs called alveoli which, if flattened, would have the surface area of a tennis court. However, these tremendously complex and intricate structures comprise only 10 to 15 percent of the volume of an inflated lung. The rest is air.

"When I look into a microscope at about 200 times magnification and observe a histological section of human lung tissue, I see kind of a network of thin bands that I suspect to represent the walls between airspaces, the empty-looking areas; and some of the network bands mysteriously have free ends," explained Ewald R. Weibel, M.D., D.Sc., who is senior author of the standards and professor emeritus at the Institute for Anatomy at the University of Berne in Switzerland.

New advanced lung imaging techniques offer genuine three-dimensional views of the lung, and because of their ready availability, these techniques provide inve
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Contact: Keely Savoie
ksavoie@thoracic.org
212-315-8620
American Thoracic Society
Source:Eurekalert

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