Figure 6
From: Quantitative blood flow velocity imaging using laser speckle flowmetry
In vivo determination of α.
1/τc versus V for RBCs in vivo, for (a) chick embryo and (b) human microcirculation. The top panels (green open circles) show 1/τc estimated by a multi-exposure curve fit (Supplementary Section IIId, equation 12) and τc,offset correction (Supplementary equation (13)21). The bottom panels show 1/τc,1 rescaled for the average number of scattering events N, using model based Α(N) = α/α1 and 1/τc,1 = (1/τc)/Α(N). In both (a,b) one data point was excluded as an outlier (not shown). Vertical error bars represent 95% CI of the multi-exposure curve fit and horizontal error bars represent the standard deviation in reference flow velocity measurements from conventional SDF images. The slope, or α1, is 0.20 ± 0.07 (95% CI) and 0.39 ± 0.15 for chick embryo respectively human RBCs and the theoretical prediction for α1 is 0.27 respectively 0.38.
