Figure 2.

Results of basis set decomposition into equivalent densities of water (H₂O) and dipotassium hydrogen phosphate (K₂HPO₄) of dual-energy quantitative computed tomography (DEQCT) scans of the liver acquired at 80 and 120 kV_p in 14 healthy Chinese subjects. Straight lines determined by linear regression join the three regions of interest (ROI) measured in each subject in the right-superior, right-inferior and left lobes respectively. Also plotted are straight lines showing the orientation of the major axis eigenvector in the equivalent densities representation of the data (Table 3) and the lines of constant Hounsfield units (HU) at 80 and 120 kV_p.