Fig. 9.
a) Mean AreaFWHM across subjects, b) mean VolFWHM across subjects, c) mean peakFWHM across subjects and d) mean Euclidean distance across subjects between the true peak change in absorption and that recovered from the images. The variance approach results are shown in black squares, the covariance in magenta triangles and the identity matrix in blue circles. The shaded areas represent the standard deviation among subjects. The black arrow indicates whether the true value was lower or larger than the estimated one.