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Table 1 Mean enhancements (HU) of the aorta and hepatic parenchyma in the arterial, portal and hepatic parenchymal phases

From: Optimal delay for triple-phase hepatic computed tomography using a bolus-tracking technique in cats

ROI

Arterial phase

Portal phase

Hepatic parenchymal phase

0 s

2 s

4 s

5 s

7 s

9 s

60 s

62 s

64 s

Aorta

394.8 ± 26.57a

479.2 ± 47.43b

560.7 ± 43.35c

588.7 ± 18.96a

466.1 ± 15.98b

342.0 ± 29.91c

164.4 ± 19.39a

207.1 ± 12.55b

107.3 ± 9.05c

Hepatic parenchyma

13.46 ± 1.14a

19.54 ± 4.57b

26.90 ± 5.63c

46.78 ± 1.62a

58.10 ± 12.09a

97.29 ± 16.20b

68.23 ± 16.15a

81.22 ± 10.61a

49.03 ± 12.86b

  1. The values are shown as the mean ± standard deviation. HU Hounsfield Units, ROI region of interest. Values with different letters among the three transition delay time points of the arterial, portal or hepatic parenchymal phase differ significantly (P < 0.05) based on a one-way ANOVA with the least significant difference method