Table 3.

Overall mean quantitative parameters for aorta and peripheral accesses

Vessel segment	Mean HU	Mean noise	Mean CNR	Image quality score (median value)
Aortic root	576.6 ± 54.5	29.1 ± 6.1	15.8 ± 2.3	3.5
Ascending aorta	580.2 ± 77.4	33.2 ± 6.2	15.7 ± 1.7	3
Descending aorta	552.1 ± 88.4	30.4 ± 5.8	14.9 ± 3.1	3
Subrenal aorta	525.2 ± 77.6	30.6 ± 4.5	15.8 ± 4.7	3
R common femoral artery	509.7 ± 78.4	23.7 ± 7.5	20.4 ± 8.9	3
L common femoral artery	502.3 ± 81.09	22.8 ± 5.9	20.6 ± 6.9	3

CNR, contrast-to noise-ratio; HU Hounsfield unit; L, left; R, right; SD, standard deviation.

Data are expressed as mean ± SD.