An acoustic plethysmograph to measure total infant body volume.

@article{Deskins1985AnAP,
  title={An acoustic plethysmograph to measure total infant body volume.},
  author={William Deskins and Dean C. Winter and H. P. Sheng and Cutberto Garza},
  journal={Journal of biomechanical engineering},
  year={1985},
  volume={107 4},
  pages={304-8}
}
An acoustic plethysmograph intended to measure the body volume of premature infants has been developed using the principle of the Helmholtz resonator, in which the resonance frequency is dependent on the volume of the resonating cavity. A prototype system was built and used to measure the volume of inanimate objects and newborn miniature pigs. Results for inanimate objects agree within 1 percent with comparable measurements by water displacement. Results of the animal body volume measurements… CONTINUE READING

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