Figure 1.

In vitro apparent diffusion coefficient (ADC) measurements. (a) Variability over 100 days with horizontal lines showing the mean (solid) and standard deviation (dashed) over the period. (b) Daily repeats with horizontal lines showing the mean and standard deviation of the 10 scans. (c) Example of phantom ADC measurements where points are the mean ADC values for each slice, the solid line is the mean for the whole phantom, the dashed lines show the standard deviation for the slices and dotted lines show the standard deviation of all pixels.