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Fig. 3 —Graph showing scan delay after trigger-versus-mean CEI for
spleen, proximal portal veins, liver parenchyma, and hepatic veins. Mean CEI
of spleen showed peak at 20 seconds. Mean CEI of spleen was significantly
higher at 10-15 seconds than at 5 seconds (p < 0.001) and higher
at 20 seconds than at 30 seconds (p < 0.005). Mean CEI of proximal
portal veins increased constantly from 5 to 25 seconds, and had peak at 25
seconds. Mean CEI of proximal portal veins was significantly higher at 15
seconds than at 5-10 seconds (p < 0.001) and higher at 25-30
seconds than at 20 seconds (p < 0.005). Mean CEI of liver
parenchyma increased constantly from 5 to 30 seconds and then plateaued at
45-55 seconds. Mean CEI of hepatic veins peaked at 45 seconds. Note that
x-axis is indicative not of time course (repeated measurement) but of
three different subgroups with different imaging delays, comprising 57
patients each. Error bars = standard errors of means.
