Table 1.

Attenuation values (HU) for 80-kVp and virtual 120-kV images in different anatomical regions of the abdomen.

Anatomical Region	80 kVp	virtual 120 kVp	p-value
Liver metastases	121.4 ± 13.3	96.7 ± 18.5	<0.05
Liver	70.1 ± 11.6	61.4 ± 7.6	<0.05
Muscle	47.4 ± 16.2	42.4 ± 11.0	<0.05
Fat	−111.3 ± 18.5	−92.2 ± 16.2	<0.05
Air	−957.4 ± 145.2	−982.5 ± 99.3	<0.05
Aorta	367.9 ± 73.6	233.4 ± 54.6	<0.05