Keywords:
Imaging sequences, Image compression, MR-Angiography, MR, Vascular, Cardiovascular system, Cardiac, Haemodynamics / Flow dynamics
Authors:
B. Longere1, G. Braye1, J. PAGNIEZ1, V. Silvestri1, A. Simeone1, K. KASPRZAK1, A. Monnet2, F. Pontana1; 1Lille/FR, 2Erlangen/DE
Results
All acquisitions were successfully completed.
The mean scan time was 4.16 ± 0.84 min.
Mean age was 49.4 ± 21.0 y/o (range: 18 to 85) and 18 patients were males.
Based on 2D-PC-MRI which was considered as the gold standard, an aortic regurgitation lower than 5 % was assessed in 12 patients, a mild regurgitation higher than 5 % in 5 patients, a moderate regurgitation in 3 patients and a severe regurgitation, above 40 %, in 2 patients.
A moderate aortic stenosis was present in 2 patients.
Considering 2D-PC-MRI as reference, results a summarized in Table 1.
No significant difference could be demonstrated regarding forward volume (Fig. 2) and peak velocity. A statistically significant trend for underestimation of reverse volume was assessed considering reverse flow (Fig. 3). This finding is in line with previous publications5.
There was a very good inter-rater and intra-rater agreement with an intraclass correlation coefficient of 0.96 [95% CI: 0.87 to 0.98] and 0.97 [95% CI: 0.90 to 0.99] respectively.