Table 1: Vital statistics and quantitative
imaging parameters of different living donor groups who underwent pre-operative
CTA imaging at 100 or 120 kVp. Values are listed in
the format: mean ± standard deviation,
(range).
|
Parameter |
100 kVp |
120 kVp |
p-value |
|
Age (years) |
42.8 ± 11.5, (19-66) |
40.8 ±10.4, (19-61) |
0.21 |
|
Weight (kg) |
80.9 ±17, (53.2-120.8) |
78.7 +13.8,
(47.5-116.9) |
0.42 |
|
Mean Attenuation (HU) |
|||
|
Aorta |
357.4 ± 7.1, (226.4-540.3) |
270.8 ± 9.4, (161.4-382.0) |
< 0.001 |
|
Mean renal artery |
327.2 ± 6.3, (218.2-521.9) |
239.6 ± 7.7, (141.0-324.5) |
< 0.001 |
|
Noise (SD psoas) |
34.2 ± 1.2, (18-68.5) |
24.3 ± 1.0, (15.5-42.6) |
< 0.01 |
|
Signal-to-Noise (SNR) |
10.8 ± 0.5, (3.3-22.6) |
10.3 ± 0.5, (4.2-16.4) |
0.45 |
|
Contrast-to-Noise (CNR) |
9.1 ± 0.4, (2.5-19.8) |
8.1 ± 0.5, (3.0-12.8) |
0.12 |
|
Dose (CTDIvol) |
8.99 ± 1.89, (4.89-15.57) |
16.19 ± 5.2, (10.09-26) |
< 0.001 |