. Author manuscript; available in PMC: 2012 Oct 1.

Published in final edited form as: Invest Radiol. 2012 Oct;47(10):588–595. doi: 10.1097/RLI.0b013e318260abb3

TABLE 2.

Relative error of DCE-CT estimated liver tissue blood perfusion using the direct slope method compared with flowmeter measured liver tissue blood perfusions.

	Capnic Condition
	Normocapnia	Hypocapnia	Hypercapnia
HA	−21 ± 23%	9 ± 23%	64 ± 28%^*
PV	81 ± 31%^*	92 ± 42%^*	−2 ± 20%
HA+PV	57 ± 26%	72 ± 32%	11 ± 12%
HA/(HA+PV)	−44 ± 15%^*	−25 ± 18%	72 ± 38%

Values are shown as mean ± SEM (n = 10 pigs); HA, hepatic artery; PV, portal vein;

^*)

Mean value was significantly different from zero (P<0.05).