Estimation of Lung Volume Change from Torso Hemicircumferences A technique for estimating lung volume change is described. Voltages proportional to rib cage and abdominal hemicircumferences are produced by Whitney-gage transducers in a standard bridge circuit. The weighted sum of these voltages can be adjusted to produce a good estimate of lung volume change. The instrumentation does not obstruct ... Research Note
Research Note  |   December 01, 1977
Estimation of Lung Volume Change from Torso Hemicircumferences
 
Author Affiliations & Notes
  • R. J. Baken
    Teachers College, Columbia University, New York
Article Information
Research Note
Research Note   |   December 01, 1977
Estimation of Lung Volume Change from Torso Hemicircumferences
Journal of Speech, Language, and Hearing Research, December 1977, Vol. 20, 808-812. doi:10.1044/jshr.2004.808
History: Received March 25, 1977 , Accepted April 20, 1977
 
Journal of Speech, Language, and Hearing Research, December 1977, Vol. 20, 808-812. doi:10.1044/jshr.2004.808
History: Received March 25, 1977; Accepted April 20, 1977

A technique for estimating lung volume change is described. Voltages proportional to rib cage and abdominal hemicircumferences are produced by Whitney-gage transducers in a standard bridge circuit. The weighted sum of these voltages can be adjusted to produce a good estimate of lung volume change. The instrumentation does not obstruct articulatory movements, load the chest wall, or require restraint of the subject. In addition, it is easy and inexpensive to construct.

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