Table 2.
Inter-modality agreement
| Aorta levels | Area (cm2) | Circumference (mm) | Diameter (mm) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CTA | CMRA | ICC | CTA | CMRA | ICC | CTA | CMRA | ICC | |
| Sinus | 11.8 ± 2.8 | 12.0 ± 2.7 | 0.96 | 127.6 ± 14.7 | 130.8 ± 15.7 | 0.92 | 39.2 ± 4.9 | 41.0 ± 5.0 | 0.90 |
| Sinotubular junction | 10.4 ± 2.0 | 10.4 ± 2.0 | 0.90 | 115.5 ± 11.1 | 116.7 ± 12.1 | 0.90 | 36.5 ± 3.5 | 37.0 ± 3.8 | 0.89 |
| Mid ascending aorta | 14.1 ± 2.6 | 14.2 ± 2.5 | 0.94 | 133.5 ± 13.7 | 135.7 ± 12.9 | 0.90 | 42.3 ± 4.2 | 43.1 ± 4.2 | 0.93 |
| Proximal arch | 11.4 ± 2.6 | 11.6 ± 2.7 | 0.93 | 120.5 ± 14.3 | 123.0 ± 14.7 | 0.86 | 38.1 ± 4.5 | 39.1 ± 4.8 | 0.91 |
| Mid arch | 7.7 ± 2.0 | 7.3 ± 2.0 | 0.91 | 98.6 ± 12.4 | 97.6 ± 13.0 | 0.94 | 31.3 ± 4.0 | 31.1 ± 4.0 | 0.94 |
| Proximal descending aorta | 6.2 ± 1.3 | 6.0 ± 1.2 | 0.92 | 89.0 ± 9.7 | 88.9 ± 9.1 | 0.90 | 28.1 ± 3.1 | 28.1 ± 3.0 | 0.84 |
| Mid descending aorta | 6.2 ± 3.2 | 6.1 ± 2.6 | 0.96 | 88.0 ± 19.5 | 87.6 ± 16.7 | 0.97 | 27.8 ± 6.2 | 28.1 ± 5.5 | 0.97 |
Area, circumference and diameter measurements on CTA and CMRA at different levels of the thoracic aorta. Data are reported as means with standard deviation. Inter-modality agreement is shown with ICC values
CTA computed tomography angiography, CMRA cardiovascular magnetic resonance angiography, ICC intra-class correlation coefficient