Impact of Respiratory Gating on Hemodynamic Parameters from 4D Flow MRI

The hemodynamic parameters from 4D flow datasets have shown promising diagnostic value in different cardiovascular pathologies. However, the behavior of these can be affected when data are corrupted by respiratory motion. purpose this work was to perform a quantitative comparison between computed cardiac MRI both with and without self-gating. We considered 15 healthy volunteers (10 men 5 women, 30.40 ± 6.23 years age) that were acquired at 3T. Using semiautomatic segmentation process aorta, we obtained MRI, A statistical analysis, using Wilcoxon signed-rank test Bland–Altman, performed compare acquisitions. found calculations self-gating showed underestimated values aortic arch, descending diaphragmatic aorta. also significant variability ascending aorta comparing methods. requires compensation provide reliable parameters.