Table 2. Peak arterial enhancement (HU, mean ± standard deviation) for injection protocol A-D.
| A | B | C | D | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| right superior PA | 430.7 | ± | 35.5 | 396.1 | ± | 30.1 | 596.2 | ± | 105.5 | 739.2 | ± | 135.9 |
| right inferior PA | 422.4 | ± | 24.1 | 394.9 | ± | 29.4 | 603.7 | ± | 90.5 | 743.9 | ± | 149.2 |
| left superior PA | 447.1 | ± | 65.6 | 389.4 | ± | 38.0 | 591.2 | ± | 74.7 | 674.8 | ± | 205.1 |
| left inferior PA | 441.3 | ± | 76.8 | 393.3 | ± | 55.5 | 602.8 | ± | 84.8 | 670.9 | ± | 205.8 |
| ascending aorta | 341.0 | ± | 33.7 | 350.4 | ± | 29.3 | 458.5 | ± | 71.7 | 497.1 | ± | 38.2 |
| brachiocephalic trunk | 371.3 | ± | 41.6 | 370.5 | ± | 33.4 | 454.0 | ± | 65.3 | 473.5 | ± | 51.1 |
| descending aorta (mv) | 356.2 | ± | 37.9 | 363.8 | ± | 38.8 | 460.8 | ± | 63.8 | 492.2 | ± | 56.8 |
| descending aorta (d) | 392.0 | ± | 40.5 | 372.6 | ± | 30.8 | 493.5 | ± | 66.6 | 525.6 | ± | 53.0 |
| abdominal aorta (ct) | 380.5 | ± | 36.7 | 360.2 | ± | 32.3 | 496.6 | ± | 74.2 | 497.9 | ± | 58.3 |
| abdominal aorta (ra) | 379.1 | ± | 47.1 | 370.0 | ± | 26.7 | 492.8 | ± | 86.9 | 474.2 | ± | 37.1 |
| left renal artery | 315.1 | ± | 61.3 | 322.0 | ± | 48.6 | 427.1 | ± | 85.9 | 414.8 | ± | 36.0 |
| right renal artery | 333.7 | ± | 50.7 | 343.2 | ± | 49.8 | 428.5 | ± | 85.9 | 445.2 | ± | 60.3 |
PA pulmonary artery; mv: level of mitral valve; d level of diaphragm (aortic hiatus); ct: level of celiac trunk; ra: level of renal arteries. All HU values are baseline corrected to avoid bias from residual intravasal CM from previous scans.