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%.
|Number of pages||7|
|Journal||Proceedings of SPIE - the International Society for Optical Engineering|
|Publication status||Published - 1991|
|Event||Biostereometric Technology and Applications - Boston, MA, USA|
Duration: 7 Nov 1990 → 8 Nov 1990