Table 3. Detailed HU attenuation within the aortic root and the aortoiliac CTA.
| Measures | Study Group (n = 50) |
Control Group (n = 24) |
p value |
|---|---|---|---|
| Aortic root | |||
| HU attenuation | 480 ±139 (169–925) |
372 ±114 (183–629) |
<0.01 |
| SD | 36 ±6 (24–49) |
38 ±8 (24–54) |
0.21 |
| SNR | 14 ±5.3 (4.2–31.3) |
10.3 ±4.2 (4.4–20.6) |
<0.01 |
| CNR | 10.4 ±4.5 (2.7–25.8) |
6.8 ±3.3 (2.2–14.2) |
<0.01 |
| Aortoiliac CTA | |||
| HU attenuation | 364 ±170 (117–828) |
400 ±95 (221–595) |
0.16 |
| SD | 23 ±10 (14–55) |
28 ±4 (20–37) |
<0.01 |
| SNR | 16.5 ±8 (5.1–36.9) |
14.7 ±5.5 (7.3–25.1) |
0.42 |
| CNR | 14.1 ±7.9 (3.3–34.3) |
12.5 ±5 (2.2–14.2) |
0.66 |
Numbers are given in a mean ±SD (minimum–maximum) fashion.