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In previous work, tracking of isophase lines in a structured light pattern projected on the human face was used to acquire the 3-D coordinates of the face in real time (1/30th of a second) (see K. Cheung and M.D. Fox, Proc. IEEE EMBS 11th Ann. Conf., p.1655-6, June 1989). In the present work, the author automated tracing of an isophase line to achieve submillimeter 3-D resolution. In contrast to work...
The authors point out that current techniques for the quantification of blood glucose, particularly in the home environment, have lacked precision. In their investigations into the rotary effects of glucose upon the polarization vector of light, the authors have developed a polarimeter capable of microdegree precision. At the present sensitivity, normal physiological levels of blood glucose could...
A diode laser and fiber optics have been successfully incorporated in a compact, low-cost micro laser Doppler velocimeter. Preliminary experiments show good results for measuring velocity and provide a promising future for measuring blood flow. The micro laser Doppler flowmeter will provide a low-cost, more compact alternative to existing laser Doppler flowmeters.<<ETX>>
The feasibility of accurate prediction of physiological glucose concentration in phosphate buffered saline (PBS) solutions with a pH of 7.4, maintained at 37 degrees C, was demonstrated by applying univariate and multivariate statistical methods to their mid-infrared spectra (1500-800 cm/sup -1/). Multivariate methods, partial least squares, and principal components regression produced calibration...
Albumin, ethanol, and urea were measured in-vitro using Fourier transform infrared (FTIR) spectroscopy. The peak height and corresponding peak area of the spectra were computed for concentration prediction. This univariate method was compared with partial least squares (PLS) and principal component regression (PCR) multivariate routines. The standard errors of calibration obtained were cholesterol...
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