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Figure 2


Fig. 2 —Graph shows contrast phase versus mean signal intensity for abdominal aorta and spleen. Signal intensity of abdominal aorta peaks in early hepatic arterial phase (HAP) and then decreases over time. Significant differences in mean signal intensity (p < 0.005) exist between all phases but not between late HAP and portal venous phase (PVP). Signal intensity of spleen is high in early HAP, late HAP, and portal venous phase and then decreases slightly in equilibrium phase (EP). Significant differences in mean signal intensity (p < 0.0001) exist between all phases but not between early HAP and equilibrium phase or between late HAP and portal venous phase. Pre = before contrast injection.