Table 2.

Mean blood attenuation in various anatomic locations.

	Total	Nonanemic subjects	Anemic subjects	p value*
Hounsfield unit (interquartile range)
Aortic arch	28–43	40–47.5	25–36	0.000
Ascending aorta	27–44	39.7–50	24–37	0.000
Descending aorta	29–45	39.2–50	25–37	0.000
Pulmonary artery	30–42	40–47.7	27–37	0.000
IVC	30–45	40–50	28–37	0.000
Right ventricle	34–45	35–47	27.2–38	0.000
Left ventricle	32–45	35–48	27–37.7	0.001

IVC inferior vena cava.

*Mann Whitney test.