Figure 3
Sensitivity and linear correlation between signal intensity and Ag NP concentrations shown by micro CT phantom. Ag NPs were dissolved in H2O at variable concentrations (mM) and imaged using micro CT (A). The signal intensities of each dot were normalized by dividing with that of the air and linear correlation with the Ag NP concentrations was estimated (B). Concentrations in A: 0 = H2O; 1=, 92.7 mM; 3 = 185.4.4 mM; 3 = 278.0 mM; 4 = 370.7 mM. AU: arbitrary unit; L: linear; O: observed.