PMID: 542910Dec 1, 1979Paper

Estimation of lung volumes from chest radiographs using shape information

Thorax
R J PierceD M Denison

Abstract

The cross-sectional shapes of the chest and its contained structures have been assessed in post-mortem anatomical sections and from computerised tomographic scans in living subjects. These shapes are described by simple equations that can be used to increase the accuracy of measuring lung volumes from chest radiographs. Radiographic estimates of total lung capacity, using the equations, were compared with plethysmographic and single-breath helium dilution measurements in 35 normal subjects. The postures commonly used for taking chest radiographs were found, on average, to decrease total lung capacity (TLC) and to increase residual volume by about 200 ml when compared with the sitting positions used for the other two measurements (studies made in 18 of the subjects). After correction for this effect, the radiographic estimates of TLC, which measure the displacement volume of the lung, exceeded the plethysmographic estimates of contained gas volume by a mean of 720 ml, which was taken as the volume of tissue, blood, and water in the lungs. The single-breath dilution estimates of TLC fell short of the plethysmographic values by a mean of 480 ml, taken as the volume of contained gas that was inaccessible to helium in 10 seconds. Th...Continue Reading

References

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Citations

May 1, 1992·Pediatric Pulmonology·M H FumeyL C Kao
Mar 26, 1988·Lancet·A G DavisonM C Scott
Oct 19, 1999·Journal of Computer Assisted Tomography·S D QanadliG Frija
Dec 1, 1984·Thorax·G Laszlo
Aug 1, 1984·Thorax·P OpenshawP Helms
Jun 1, 1989·Thorax·M S RothsteinM H Williams
Nov 11, 1999·American Journal of Respiratory and Critical Care Medicine·B SinghA W Musk
Oct 31, 2002·American Journal of Respiratory and Critical Care Medicine·Robert B GormanSimon C Gandevia
May 30, 2003·American Journal of Respiratory and Critical Care Medicine·François BellemareJacques Couture
Jul 1, 1987·British Journal of Diseases of the Chest·N M SiafakasI Sigalas
Jan 1, 1984·British Journal of Diseases of the Chest·M D Morgan, B Strickland
Jan 1, 1982·Annals of the New York Academy of Sciences·J M Hughes
Sep 1, 1986·Acta Radiologica: Diagnosis·E LaerumS Larsen
Feb 7, 2003·Journal of Applied Physiology·Bhajan SinghKevin E Finucane
Oct 20, 2001·Journal of Applied Physiology·B SinghK E Finucane
Oct 1, 1981·British Journal of Diseases of the Chest·D M DenisonJ F Waller

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