Real time optical scanning system for measurement of chest volume changes during anaesthesia

N. D. Duffy, G. D. Drummond, S. McGowan, P. Dessesard

Research output: Contribution to journalArticle

Abstract

A low cost, real time method of measuring the movement of the ribcage and abdomen during anaesthesia is described. The equipment comprises a scanning light stripe system, video pre-processing electronics and a personal computer. Selected chest surface contours are measured at the rate of 20ms per contour. Linear interpolation is used to provide contour area estimates between contour sample periods to allow chest volume to be calculated at 20ms intervals. Results using test objects show that the equipment is able to measure volume to an accuracy of better than 1% with reproducibility to within 0.3%.

Original languageEnglish
Pages (from-to)46-52
Number of pages7
JournalProceedings of SPIE - the International Society for Optical Engineering
Volume1380
Publication statusPublished - 1991
EventBiostereometric Technology and Applications - Boston, MA, USA
Duration: 7 Nov 19908 Nov 1990

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