Author
   Adler A. Shinozuka N. Guardo R. Berthiaume Y. Bates J.
Institution
   Meakins-Christie Labs., McGill Univ., Montreal, Que., Canada.
Title
   Monitoring of lung volume in dogs with electrical impedance tomography.
Source
   Proceedings of the 18th Annual International Conference of the IEEE
   Engineering in Medicine and Biology Society. `Bridging Disciplines for
   Biomedicine' (Cat. No.96CH36036). IEEE. Part vol.2, 1997, pp.776-7 vol.2.
   New York, NY, USA.
Conference Information
   Proceedings of 18th Annual International Conference of the IEEE
   Engineering in Medicine and Biology Society. Amsterdam, Netherlands. Int.
   Federation of Med. & Biol. Eng. Eur. Soc. Eng. & Med. 31 Oct.-3 Nov. 1996.
Abstract
   Ventilated patients suffering from high pulmonary airway resistance may
   become dynamically hyperventilated if there is insufficient time to expire
   before the onset of the next inspiration. Electrical impedance tomography
   (EIT) is potentially a useful technique to evaluate these changes in lung
   volume due to changes in the ventilatory regime of patients. Experiments
   on dogs were conducted to verify the ability of EIT to measure the lung
   volume increase due to application of positive end expiratory pressure.
   Estimates by EIT were compared to those calculated from the airway
   pressure. The difference in volume estimates was approximately
   proportional to the hyperinflation volume. The rms difference was 143 ml
   for an average volume increase of 482 ml.