Comparison of blood flow velocity quantification by 4D flow MR imaging with ultrasound at the carotid bifurcation.

摘要: BACKGROUND AND PURPOSE: 4D flow MR imaging is an emerging technique that allows visualization and quantification of 3D blood in vivo. However, representative studies evaluating its accuracy are lacking. Therefore, we compared by using with US within the carotid bifurcation. MATERIALS METHODS: Thirty-two healthy volunteers (age 25.3 ± 3.4 years) 20 patients ≥50% ICA stenosis 67.7 7.4 were examined preoperatively postoperatively use imaging, complete coverage left right Blood velocities assessed standardized 2D analysis planes distributed along CCA at baseline patients. In addition, tested reproducibility interobserver agreement 10 volunteers. RESULTS: Overall, 101 CCAs 79 ICAs available for comparison. underestimated ( P CONCLUSIONS: allowed accurate measurement bifurcation both only moderate underestimation US. Thus, seems promising a future combination MRA to comprehensively assess related hemodynamic changes.